Get a question & answer by ID

{
  "id": 123,
  "user_id": 123,
  "question_text": "<string>",
  "plan": "<string>",
  "evidences": [
    {
      "id": 123,
      "question_id": 123,
      "evidence": "<string>",
      "reasoning": "<string>",
      "sequence_number": 123,
      "document_id": 123,
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z"
    }
  ],
  "final_answer": "<string>",
  "answer_mode": "<string>",
  "llm_provider": "<string>",
  "chunk_type": "<string>",
  "current_state": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z"
}