{
  "schema_version": "ocme-reviewed-question-reader-v1",
  "question_id": "q-20260930-r02-ratio-exact-value-0013",
  "pilot_number": "R0068-34738",
  "number": 34738,
  "family_id": "qf-ratio-exact-value",
  "title": {
    "zh-Hant": "第 34738 題：數值比的精確值",
    "en": "Question 34738: Exact Value of a Numerical Ratio"
  },
  "original_question": {
    "schema_version": "ocme-question-v0.1",
    "id": "q-20260930-r02-ratio-exact-value-0013",
    "batch_id": "batch-20260930-r02-ratio-proportion-foundations",
    "language": "zh-Hant",
    "source_mko_ids": [
      "mko-ratio-proportion"
    ],
    "title_zh": "數值比的精確值",
    "stem_zh": "在有理數數值比語境，求 0:(5) 的精確值。後項非零，答案用最簡正分母 p/q。",
    "answer": {
      "kind": "short_text",
      "value": "0/1",
      "explanation_zh": "依順序計算前項除以後項，數值比為 0/(5)，正規化後為 0/1。"
    },
    "difficulty": {
      "band": "lower_secondary",
      "level": 1,
      "skills": [
        "比的順序",
        "非零後項"
      ]
    },
    "variant": {
      "family_id": "qf-ratio-exact-value",
      "seed": 202609302013,
      "parameters": {
        "operation": "ratio_value",
        "a": 0,
        "b": 5,
        "semantic_template": "qf-ratio-exact-value/{\"a\":0,\"b\":5,\"operation\":\"ratio_value\"}"
      }
    },
    "verification": {
      "status": "candidate",
      "checks": [
        "json_schema",
        "producer_local_answer_invariants",
        "explanation_witness_accuracy"
      ],
      "warning_zh": "本題保持 candidate；有限精確計算與產生者自檢不構成人工審查、形式證明或主架構者驗收。"
    },
    "provenance": {
      "generator_role": "question_producer",
      "generator_model": "Codex GPT-6 question producer",
      "generated_at": "2026-09-30",
      "contract_version": "ocme-question-factory-v0.1"
    }
  },
  "original_english_edition": {
    "schema_version": "ocme-question-localization-v0.1",
    "question_id": "q-20260930-r02-ratio-exact-value-0013",
    "batch_id": "batch-20260930-r02-ratio-proportion-foundations",
    "locale": "en",
    "translation_state": "ai_candidate",
    "source": {
      "question_sha256": "f79b4a458ab87128cf076fd319a203ded2be5fb8b66b27566fe498f5531905be",
      "family_id": "qf-ratio-exact-value",
      "seed": 202609302013,
      "semantic_template": "qf-ratio-exact-value/{\"a\":0,\"b\":5,\"operation\":\"ratio_value\"}"
    },
    "fields": {
      "title": "Exact Value of a Numerical Ratio",
      "stem": "In the rational numerical-ratio setting, find the exact value of 0:(5). The consequent is nonzero; answer as a reduced p/q with a positive denominator.",
      "answer": {
        "kind": "short_text",
        "value": "0/1",
        "explanation": "Divide the antecedent by the consequent in the stated order and normalize the result to 0/1."
      },
      "skills": [
        "ratio order",
        "nonzero consequent"
      ],
      "verification_warning": "This is a candidate exercise. Mechanical recomputation checks only the stated conditions and this instance; it is neither a formal proof nor human review."
    }
  },
  "givens": [
    {
      "id": "G001",
      "text": {
        "zh-Hant": "在有理數數值比語境，求 0:(5) 的精確值。後項非零，答案用最簡正分母 p/q。",
        "en": "In the rational numerical-ratio setting, find the exact value of 0:(5). The consequent is nonzero; answer as a reduced p/q with a positive denominator."
      }
    }
  ],
  "steps": [
    {
      "id": "S001",
      "uses": [
        "G001"
      ],
      "before": "source roles = [qf-ratio-exact-value, [a, b, operation]]",
      "after": "derived = [ratio_value, no-invented-domain]",
      "relation": "implies",
      "rule_id": "R68_BANK_specific_keys_operations_and_numeric_guards",
      "conditions": [],
      "explanation": {
        "zh-Hant": "按來源分bank：legacy raw SAFE/衍生BigInt無界，BASE Number.isInteger不偷加SAFE/百萬界。underscore operation、domain及寬/嚴keys各依本bank；原JSON完整保存。",
        "en": "Separate source banks:legacy RAW SAFE with unbounded derived BigInts versus BASE Number.isInteger without invented SAFE/million caps.Operations,domains and permissive/exact keys follow THIS bank.Keep ORIGINAL JSON intact."
      },
      "reverse_audit": {
        "kind": "premise_and_result_audit",
        "explanation": {
          "zh-Hant": "反向核對本題的原始已知量、論域與本步條件；保留原題/英文/MKO/AST/狀態，不把單向推論倒成等價，也不把有限核對當獨立審查或一般形式證明。",
          "en": "Reverse-check THIS question’s ORIGINAL givens,domain and step premises.Preserve originals/English/MKOs/ASTs/status;do not reverse a one-way implication or call finite checks independent review or general formal proof."
        }
      },
      "arithmetic": null
    },
    {
      "id": "S002",
      "uses": [
        "G001",
        "S001"
      ],
      "before": "Ratio ORIGINAL antecedent divided by NONzero consequent := div(0, 5)",
      "after": "Ratio ORIGINAL antecedent divided by NONzero consequent = 0",
      "relation": "calculation",
      "rule_id": "exact_rational_arithmetic",
      "conditions": [],
      "explanation": {
        "zh-Hant": "按原操作數/次序精確運算；乘/減/除明示兩操作數，legacy BigInt衍生量不重套raw SAFE界，BASE Number來源的型別/表示條件另驗，不以浮點近似湊答案。",
        "en": "Calculate exactly from ORIGINAL ordered operands;mul/sub/div have EXPLICITLY TWO operands.Legacy derived BigInts are not recapped at RAW SAFE;check BASE Number type/representation conditions separately.Do not use floating approximations to force an answer."
      },
      "reverse_audit": {
        "kind": "premise_and_result_audit",
        "explanation": {
          "zh-Hant": "以精確有理數重算 Ratio ORIGINAL antecedent divided by NONzero consequent，不以小數近似替代。",
          "en": "Recompute Ratio ORIGINAL antecedent divided by NONzero consequent with exact rational arithmetic, not rounded decimals."
        }
      },
      "arithmetic": {
        "operation": "div",
        "inputs": [
          "0",
          "5"
        ],
        "output": "0",
        "label": "Ratio ORIGINAL antecedent divided by NONzero consequent"
      }
    },
    {
      "id": "S003",
      "uses": [
        "G001",
        "S002"
      ],
      "before": "source roles = [0, 5]",
      "after": "derived = [0/1]",
      "relation": "implies",
      "rule_id": "Ratio_ORDERED_numerical_ratio_reduced_positive_denominator",
      "conditions": [],
      "explanation": {
        "zh-Hant": "數值比a:b依序是a/b，先b非0；允負數，gcd約分並把分母化正，整數保/1。不倒置成b/a，也不當任意量綱下都可相除。",
        "en": "The ORDERED numerical ratio a:b is a/b,FIRST requiring b≠0.Negative inputs are allowed;reduce by gcd and make the denominator positive,RETAINING/1 for integers.Do not invert the ratio or infer arbitrary dimensional division."
      },
      "reverse_audit": {
        "kind": "premise_and_result_audit",
        "explanation": {
          "zh-Hant": "反向核對本題的原始已知量、論域與本步條件；保留原題/英文/MKO/AST/狀態，不把單向推論倒成等價，也不把有限核對當獨立審查或一般形式證明。",
          "en": "Reverse-check THIS question’s ORIGINAL givens,domain and step premises.Preserve originals/English/MKOs/ASTs/status;do not reverse a one-way implication or call finite checks independent review or general formal proof."
        }
      },
      "arithmetic": null
    }
  ],
  "math_model": {
    "result": "0/1"
  },
  "conclusion": {
    "canonical_value": "0/1",
    "explanation": {
      "zh-Hant": "依上列完整代值及條件核對得到原題答案；原題編號、格式與狀態保持不變。",
      "en": "The full substitutions and premise checks give the original answer; source identity,format and status are unchanged."
    }
  },
  "definition_note": {
    "zh-Hant": "沿用原題明示的論域、假設與來源 MKO 定義。本題已完成第二對話數理與中英語義覆核，並由原始參數逐題獨立重算模型、答案與每個算術步驟；原題仍為 candidate。",
    "en": "Use the original question domain, assumptions and cited MKO definitions. This item has second-context mathematical and bilingual review, with the model, answer and every arithmetic step independently recomputed from the original parameters; the source question remains a candidate."
  },
  "source": {
    "input_commit": "0f7be61e2c22317a4075561dc822c87d881a50db",
    "question_binding": {
      "batch_id": "batch-20260930-r02-ratio-proportion-foundations",
      "batch_path": "public/data/questions/batches/batch-20260930-r02-ratio-proportion-foundations/questions.jsonl",
      "batch_sha256": "1f5eaf24316978d57a4c22a3f3aac6fd6dc95db9751a0100d628ac8d38366a55",
      "original_line": 13,
      "original_line_sha256": "01dbb0769c5a0b01ef0820513eec11f212efae7633c0a342e081ba4fa070645d",
      "question_compact_sha256": "f79b4a458ab87128cf076fd319a203ded2be5fb8b66b27566fe498f5531905be",
      "english_row_compact_sha256": "1ad153063cc2b8cf2b2cb3e3c6c97f924eab758f5814dadc86afa86829952e6b",
      "english_manifest_path": "public/data/i18n/editions/batch-20260930-r02-ratio-proportion-foundations.en.json",
      "english_rows_path": "public/data/i18n/questions/batch-20260930-r02-ratio-proportion-foundations.en.jsonl"
    },
    "mko_bindings": {
      "mko-ratio-proportion": {
        "sha256": "b0200b9dd1e1ceb4c2b34f37f0279a1abaf31c3021957de6cd9ea72919da47ec",
        "english_sha256": "f41a9985bd51a22f5108587c130e1ecaa9d44b5c929b8653cb23ff7ac3021771",
        "original_path": "public/data/mko/ratio-proportion.json",
        "english_path": "public/data/i18n/editions/mko-ratio-proportion.en.json"
      }
    },
    "selected_manifest_sha256": "5233edba9654a6cffd8b6b2d83c932f82ded15f9c0b7c733bd049943e672acff",
    "selected_part_sha256": "345142be27643acca9d0fec2422ac7311b85bf142709391cd6b5b3a33c03cf8e",
    "original_candidate_sha256": "ecf9de379ee313c2f271355555b6f2ebde9b803d813ab8198848ceacc991e071",
    "original_candidate_line_sha256": "ecf9de379ee313c2f271355555b6f2ebde9b803d813ab8198848ceacc991e071"
  },
  "historical_source_state": {
    "review_state": {
      "derivation": "candidate_authored_and_locally_checked",
      "source_question_state": "candidate",
      "independent_AI_or_human_review": "NOT_PERFORMED",
      "formalization": "not_formalized",
      "Lean": "NOT_RUN"
    },
    "scope_note": {
      "zh-Hant": "來源綁定教學推導候選；精確核對不等於獨立AI／人工審查或一般形式證明。原題、答案、MKO、公式、AST與歷史不變。",
      "en": "Source-bound pedagogical derivation candidate.Exact checking is not independent AI/human review or general formal proof.Original questions,answers,MKOs,formulas,ASTs and history remain unchanged."
    },
    "label": "Frozen producer metadata; current per-question review is separate below."
  },
  "revision": {
    "id": "review-20261026-012-p69",
    "review_date": "2026-10-26",
    "owner_authorized_reader_publication": true,
    "scope": "One hundred sixty family prototypes and their mathematical/bilingual reasoning variants, stems, boundary statements and every distinct explanation shape were reviewed in a context independent of the producer; parameter substitutions, source bindings, full math models, both answer strings and every arithmetic step were independently reconstructed per question from the original parameters only, with negative controls. This grouped method does not claim a separate literal AI reading of every repeated sentence or an extra AI voter.",
    "review_receipts": {
      "semantic_review_sha256": "e7a54104fa02c235f7591329bd6db8d626dd74bf0fae29c557b1f269c85066ed",
      "question_first_witness_sha256": "8401a3c2064c1275a6a7ea8f00412fa12286cec7b2db6c305ff9dba3724ae229"
    },
    "status": "second_context_reviewed",
    "mathematical_semantics": true,
    "bilingual_semantics": true,
    "steps_reviewed": 3,
    "method": "family_template_semantic_review_plus_independent_per_instance_reconstruction",
    "exact_question_first_check": {
      "model_sha256": "50b4fd74186db67771e77408f10c852f795cc877be527ae88ed40fd9065d90aa",
      "arithmetic_steps": 1
    },
    "uses_answer_as_premise": false,
    "human_review": "NOT_PERFORMED",
    "formalization": "not_formalized",
    "Lean": "NOT_RUN",
    "Canonical_truth_promotion": false,
    "authority": "Owner-authorized reviewed reader publication; original question/candidate states remain historical and unchanged."
  }
}