[
  {
    "timestamp": "2025-11-10T14:19:13",
    "question": "what trend does the bar graph show",
    "answer": "increasing (left→right)",
    "correctness": "correct",
    "sources": []
  },
  {
    "timestamp": "2026-03-11T02:25:53",
    "question": "what is this document about?",
    "answer": "This document is about an upcoming AI Workshop covering Machine Learning Basics, scheduled for November 20, 2025. It also contains a section describing a chart or graph with data from 2018 to 2024.",
    "correctness": "correct",
    "sources": []
  },
  {
    "timestamp": "2026-03-11T02:29:29",
    "question": "what is this document about?",
    "answer": "This document is about an upcoming AI Workshop covering Machine Learning Basics, scheduled for November 20, 2025. It also contains a section describing a chart or graph with data from 2018 to 2024.",
    "correctness": "correct",
    "sources": []
  },
  {
    "timestamp": "2026-03-11T02:29:40",
    "question": "what is this document about?",
    "answer": "This document is about an upcoming AI Workshop covering Machine Learning Basics, scheduled for November 20, 2025. It also contains a section describing a chart or graph with data from 2018 to 2024.",
    "correctness": "correct",
    "sources": []
  }
]