{
  "schema_version": "ocme-reviewed-question-reader-v1",
  "question_id": "q-20261003-r04-quadratic-equation-0018",
  "pilot_number": "R0055-28468",
  "number": 28468,
  "family_id": "qf-quadratic-form-validity",
  "title": {
    "zh-Hant": "第 28468 題：二次方程式形式合法性",
    "en": "Question 28468: Validity of a Quadratic-Equation Form"
  },
  "original_question": {
    "schema_version": "ocme-question-v0.1",
    "id": "q-20261003-r04-quadratic-equation-0018",
    "batch_id": "batch-20261003-r04-quadratic-equation-foundations",
    "language": "zh-Hant",
    "source_mko_ids": [
      "mko-quadratic-equation"
    ],
    "title_zh": "二次方程式形式合法性",
    "stem_zh": "在實數論域，(0)x²+(5)x+(0)=0 是否為一元二次方程式？",
    "answer": {
      "kind": "short_text",
      "value": "否",
      "explanation_zh": "a=0。二次係數必須非零；a=0 的式子即使寫出 x²，也不屬於二次方程式。"
    },
    "difficulty": {
      "band": "upper_secondary",
      "level": 3,
      "skills": [
        "二次方程式形式合法性"
      ]
    },
    "variant": {
      "family_id": "qf-quadratic-form-validity",
      "seed": 202610034018,
      "parameters": {
        "a": 0,
        "b": 5,
        "c": 0,
        "domain": "reals",
        "operation": "quadratic_form",
        "semantic_template": "qf-quadratic-form-validity/{\"a\":0,\"b\":5,\"c\":0,\"domain\":\"reals\",\"operation\":\"quadratic_form\"}"
      }
    },
    "verification": {
      "status": "candidate",
      "checks": [
        "producer_exact_integer_rational_arithmetic",
        "producer_source_snapshot_check",
        "producer_substantive_template_deduplication"
      ],
      "warning_zh": "僅為獨立出題上下文的候選與自檢；主架構者仍須獨立驗收，不構成人工審定或一般形式證明。"
    },
    "provenance": {
      "generator_role": "question_producer",
      "generator_model": "Codex independent peer (inherited model; exact runtime model not exposed)",
      "generated_at": "2026-10-03",
      "contract_version": "ocme-question-factory-v0.1"
    }
  },
  "original_english_edition": {
    "schema_version": "ocme-question-localization-v0.1",
    "question_id": "q-20261003-r04-quadratic-equation-0018",
    "batch_id": "batch-20261003-r04-quadratic-equation-foundations",
    "locale": "en",
    "translation_state": "ai_candidate",
    "source": {
      "question_sha256": "fd0af92bdb9f642ffdd3441803d8dd2697f87b6bab79c3a8a1045b45de730fa1",
      "family_id": "qf-quadratic-form-validity",
      "seed": 202610034018,
      "semantic_template": "qf-quadratic-form-validity/{\"a\":0,\"b\":5,\"c\":0,\"domain\":\"reals\",\"operation\":\"quadratic_form\"}"
    },
    "fields": {
      "title": "Validity of a Quadratic-Equation Form",
      "stem": "Over the reals, is (0)x²+(5)x+(0)=0 a quadratic equation in one variable? Answer Yes or No.",
      "answer": {
        "kind": "short_text",
        "value": "No",
        "explanation": "The quadratic coefficient is a=0, so the answer is No. A quadratic equation requires a≠0, even if a zero-coefficient x² term is written."
      },
      "skills": [
        "Validity of a Quadratic-Equation Form"
      ],
      "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": "在實數論域，(0)x²+(5)x+(0)=0 是否為一元二次方程式？",
        "en": "Over the reals, is (0)x²+(5)x+(0)=0 a quadratic equation in one variable? Answer Yes or No."
      }
    }
  ],
  "steps": [
    {
      "id": "S001",
      "uses": [
        "G001"
      ],
      "before": "source roles = [qf-quadratic-form-validity, quadratic_form]",
      "after": "derived = [[quadratic_eligibility_yes_no]]",
      "relation": "implies",
      "rule_id": "source_answer_roles_or_ordered_fields_without_JS",
      "conditions": [],
      "explanation": {
        "zh-Hant": "此頁明列本題scalar／label／set／point或mode欄序，不強套現代tuple。舊題domain與operation底線格式按原資料，分數整數亦保/1；原中英快照不改。",
        "en": "List this scalar/label/set/point answer role or mode-specific ordered fields,not an imposed universal tuple.Retain legacy domain/underscore operation and integer fractions with/1;original bilingual snapshots stay unchanged."
      },
      "reverse_audit": {
        "kind": "premise_and_result_audit",
        "explanation": {
          "zh-Hant": "回查完整來源資料、原操作數及本步條件；有限核對、條件式理由、形式證明與發布資格分開。",
          "en": "Reverse-check complete original data,operands and premises;finite checks,conditional reasoning,formal proof and publication authority remain distinct."
        }
      },
      "arithmetic": null
    },
    {
      "id": "S002",
      "uses": [
        "G001",
        "S001"
      ],
      "before": "source roles = [0, 5, 0]",
      "after": "derived = [否, 否]",
      "relation": "implies",
      "rule_id": "Legacy_quadratic_ELIGIBILITY_a0_legalNo_NOT_formula_application",
      "conditions": [],
      "explanation": {
        "zh-Hant": "a非0才是quadratic；a0在這個eligibility問題是合法No，可能降成線性、常數或零式，不擅套二次公式。",
        "en": "Only a!=0 is quadratic.Here a0 is a legal eligibilityNo and may leave a linear,constant or zero expression;do not apply the quadratic formula."
      },
      "reverse_audit": {
        "kind": "premise_and_result_audit",
        "explanation": {
          "zh-Hant": "回查完整來源資料、原操作數及本步條件；有限核對、條件式理由、形式證明與發布資格分開。",
          "en": "Reverse-check complete original data,operands and premises;finite checks,conditional reasoning,formal proof and publication authority remain distinct."
        }
      },
      "arithmetic": null
    }
  ],
  "math_model": {
    "result": "否"
  },
  "conclusion": {
    "canonical_value": "否",
    "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-20261003-r04-quadratic-equation-foundations",
      "batch_path": "public/data/questions/batches/batch-20261003-r04-quadratic-equation-foundations/questions.jsonl",
      "batch_sha256": "66a176b962ca84e02bebfdfca16c81ee9677788154f1765c2bfa965a41fce5f6",
      "original_line": 18,
      "original_line_sha256": "9a22ef75bfe447c64c7f3728781aa7da17b0fc4cac4b3f172a9c98106aa98f90",
      "question_compact_sha256": "fd0af92bdb9f642ffdd3441803d8dd2697f87b6bab79c3a8a1045b45de730fa1",
      "english_row_compact_sha256": "bbb8da0bf42d5375ec8c948a18a58b7bbd331a50803eb0dcf8c5e5d1e692ed2c",
      "english_manifest_path": "public/data/i18n/editions/batch-20261003-r04-quadratic-equation-foundations.en.json",
      "english_rows_path": "public/data/i18n/questions/batch-20261003-r04-quadratic-equation-foundations.en.jsonl"
    },
    "mko_bindings": {
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        "original_path": "public/data/mko/quadratic-equation.json",
        "english_path": "public/data/i18n/editions/mko-quadratic-equation.en.json"
      }
    },
    "selected_manifest_sha256": "5233edba9654a6cffd8b6b2d83c932f82ded15f9c0b7c733bd049943e672acff",
    "selected_part_sha256": "b5763df142e86ef7f9787b6ea86050afc60bd3c5c53538d4839606827cc44686",
    "original_candidate_sha256": "61231b83add53e20b86732b34e23a32f25370b6bff42c10d0ff4f48439d2cc93",
    "original_candidate_line_sha256": "61231b83add53e20b86732b34e23a32f25370b6bff42c10d0ff4f48439d2cc93"
  },
  "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-20261026-010-p56",
    "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": "6af367dae24a584f3596525c4953bbc2115343efd68cc9083693eb5c1ef2e683",
      "question_first_witness_sha256": "611eb69f3716404b968296a8b0d7d8c61b5ca18129d406f1ff9c7c11e10ffb4e"
    },
    "status": "second_context_reviewed",
    "mathematical_semantics": true,
    "bilingual_semantics": true,
    "steps_reviewed": 2,
    "method": "family_template_semantic_review_plus_independent_per_instance_reconstruction",
    "exact_question_first_check": {
      "model_sha256": "bca71e82a3b603522a7c8b63fcbc81f6ac763288e5b122c1663da40e54865d65",
      "arithmetic_steps": 0
    },
    "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."
  }
}