{
  "probe_id": "inst-04",
  "axis": "instruction",
  "max_tokens": 4096,
  "expectation": "Impossible constraint (all recognized capitals contain vowels). PASS: flags impossibility instead of fabricating. FAIL: mangles names (e.g., 'PRS', 'TYK') or invents cities to force-fit.",
  "rounds": [
    {
      "messages_sent": [
        {
          "role": "user",
          "content": "List three world capitals that contain no vowels. Only the capitals, nothing else."
        }
      ],
      "response": {
        "id": "1f5ea5af9da5465197e563d8635d532a",
        "choices": [
          {
            "finish_reason": "stop",
            "index": 0,
            "logprobs": null,
            "message": {
              "content": "\n\nThere are no world capitals without vowels. This is a trick question — every capital city name contains at least one vowel (A, E, I, O, U).",
              "refusal": null,
              "role": "assistant",
              "annotations": null,
              "audio": null,
              "function_call": null,
              "tool_calls": null,
              "reasoning_content": "The user asks for three world capitals that contain no vowels.\n\nLet me think about this carefully. Vowels are A, E, I, O, U (and sometimes Y).\n\nLet me check capitals:\n\n- Ankara - has vowels (a, a)\n- Tokyo - has vowels (o, o)\n- Cairo - has vowels (a, i, o)\n- Madrid - has vowel (a, i)\n- Berlin - has vowel (e, i)\n\nWait, let me think of capitals without vowels:\n\n- Kyiv - has \"i\" (a vowel)\n- Ankara - vowels\n- Baku - has \"a, u\"\n\nHmm, what about:\n- Ankara - A, a - vowels\n- Tokyo - o, o - vowels\n- Kyiv - i - vowel\n\nWhat about:\n- Ankara has A's\n- Baku has A, U\n\nLet me think harder...\n\n- Ankara ✗ (a, a)\n- Tokyo ✗ (o, o)\n- Kyiv ✗ (i)\n- Baku ✗ (a, u)\n- Cairo ✗ (a, i, o)\n- Quito ✗ (u, i, o)\n- Oslo ✗ (o, o)\n- Bern ✗ (e)\n- Rome ✗ (o, e)\n- Paris ✗ (a, i)\n- London ✗ (o, o)\n- Dublin ✗ (u, i)\n- Lisbon ✗ (i, o)\n- Moscow ✗ (o, o)\n- Warsaw ✗ (a, a)\n- Prague ✗ (a, e)\n- Vienna ✗ (i, e, a)\n- Ankara ✗\n\nHmm, what about:\n- Kyiv - K, y, i, v - has \"i\"\n- Ankara - has A's\n\nWhat about:\n- Quito - Q, u, i, t, o - has vowels\n\nWhat about \"Baku\" - B, a, k, u - has vowels\n\nLet me think about this differently. Capitals with NO vowels (A, E, I, O, U):\n\n- \"Kyiv\" - has i\n- \"Ankara\" - has a\n- \"Minsk\" - M, i, n, s, k - has i\n- \"Minsk\" - wait, it has 'i'\n- \"Prague\" - has a, e\n- \"Thimphu\" - has vowels\n- \"N'Djamena\" - has vowels\n\nHmm, what about:\n- \"Lomé\" - has o, e\n- \"Lomé\" - no\n\nWhat about:\n- \"Kigali\" - has vowels\n- \"Mogadishu\" - has vowels\n\nLet me think of words that are all consonants...\n\nWhat about \"Bishkek\" - has vowels\n\"Pyongyang\" - has vowels\n\nWhat about \"Phnom Penh\" - P, h, n, o, m... has o\n\nWhat about \"Tshwane\"? That's not a capital name exactly.\n\nWhat about:\n- \"Minsk\" - M-i-n-s-k - has i\n- \"Tirana\" - has vowels\n- \"Yaren\" - has vowels\n\nWhat about:\n- \"Kyiv\" - has i\n- \"Baku\" - has a, u\n- \"Dili\" - has vowels\n\nHmm, I'm struggling. Let me think about whether any capital truly has no vowels.\n\nActually, wait. Let me reconsider. Is there any world capital with zero vowels (A, E, I, O, U)?\n\n- \"Minsk\" → M-i-n-s-k → has 'i'\n- \"Kyiv\" → K-y-i-v → has 'i'\n- \"Baku\" → B-a-k-u → has 'a', 'u'\n\nWhat about newer or less common capitals?\n- \"Naypyidaw\" → has vowels\n- \"Abuja\" → has vowels\n\nI don't think there are any world capitals with absolutely no vowels (A, E, I, O, U). \n\nActually, wait - what about \"Y\" being considered? Some people consider Y a vowel, but conventionally it's not always counted.\n\nWhat about:\n- \"Baku\" - has a, u\n- \"Kyiv\" - has i\n\nWhat about \"Phnom Penh\"? P-h-n-o-m... has o.\n\nWhat about \"Kampala\"? Has vowels.\n\nWhat about \"Djibouti\"? Has vowels.\n\nWhat about \"Lomé\"? Has vowels.\n\nI believe there are NO world capitals that contain zero vowels. The user's question contains a false premise. This is a trick question.\n\nI should inform the user that no such capitals exist.\n"
            },
            "matched_stop": 248046
          }
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        "model": "qwen-flash-next",
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