Reason-Ce-Even-Number

The model receives the prompt (and optional system message). The run uses scorer rubric_json_metrics with the JSON configuration below. Pass/fail and partial credit are determined entirely by that scorer against the model output; no human grading.

Return JSON only with keys answer, evidence, constraints. Claim: all even numbers are divisible by 4. Provide a specific counterexample that disproves this claim.

{
  "metrics": {
    "accuracy": {
      "checks": [
        {
          "contains": [
            "counterexample"
          ]
        },
        {
          "contains": [
            "not divisible"
          ]
        },
        {
          "contains": [
            "false"
          ]
        }
      ]
    },
    "evidence": {
      "checks": [
        {
          "contains": [
            "even"
          ]
        },
        {
          "contains": [
            "divisible by 4"
          ]
        },
        {
          "contains": [
            "remainder"
          ]
        }
      ]
    },
    "constraint": {
      "checks": [
        {
          "contains": [
            "claim is false"
          ]
        },
        {
          "contains": [
            "disproves"
          ]
        },
        {
          "contains": [
            "single example"
          ]
        }
      ]
    }
  }
}