When should an answer be supported, qualified or withheld?
Write answerability cases with expected decisions before running the policy. Include absent and contradictory evidence.
Answer only when required evidence exists and the contradiction flag passes. All case labels are learner-authored.
Cut these cards apart. Use the original example first, then let a partner supply a changed case. Keep sealed/final cards with the teacher until the learner commits a rule.
Question: When is the tour?
Evidence: Tour at nine.
Contradiction: False
Expected decision: answer
My prediction and reason:
Question: Is lunch free?
Evidence:
Contradiction: False
Expected decision: withhold
My prediction and reason:
Question: What is entry?
Evidence: Eight dollars; another source says ten.
Contradiction: True
Expected decision: withhold
My prediction and reason:
This policy tests answerability logic, not natural-language entailment or generated answer correctness.