{
    "model": "qwen3-8B",
    "messages": [{"role": "user", "content": "Please answer with only Y or N: Is the sky blue?"}],
    "temperature": 0.0,
    "max_tokens": 500,
    "chat_template_kwargs": {"enable_thinking": true},
    "guided_regex": "[YN]"
}

---

{
  "model": "qwen3-8B",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": "N",
        "reasoning_content": "\nOkay, the user is asking if the sky is blue. I need to answer with just Y or N. Let me think. The sky appears blue because of Rayleigh scattering. When sunlight enters the Earth's atmosphere, the shorter wavelengths of light (like blue and violet) are scattered more than the longer wavelengths (like red and yellow). Even though violet has a shorter wavelength than blue, the sky appears blue because our eyes are more sensitive to blue light and some of the violet light is absorbed by the upper atmosphere. So, the answer should be yes. But wait, sometimes the sky can look different, like during sunrise or sunset when it's more red or orange. But the general answer is that the sky is blue. So the answer is Y.\n"
      }
    }
  ]
}

---

{
    "model": "qwen3-8B",
    "messages": [{"role": "user", "content": "Please answer with only Y or N: Is the sky blue?"}],
    "temperature": 0.0,
    "max_tokens": 500,
    "chat_template_kwargs": {"enable_thinking": true}
}

---

{
  "model": "qwen3-8B",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": "\n\nY",
        "reasoning_content": "\nOkay, the user is asking if the sky is blue. I need to answer with just Y or N. Let me think. The sky appears blue because of Rayleigh scattering. When sunlight enters the Earth's atmosphere, the shorter wavelengths of light (like blue and violet) are scattered more than the longer wavelengths (like red and yellow). Even though violet has a shorter wavelength than blue, the sky appears blue because our eyes are more sensitive to blue light and some of the violet light is absorbed by the upper atmosphere. So, the answer should be yes. But wait, sometimes the sky can look different, like during sunrise or sunset when it's more red or orange. But the general answer is that the sky is blue. So the answer is Y.\n"
      }
    }
  ]
}