{
  "session_id": "session_data_20260408_091457",
  "total_duration_s": 1703.1,
  "n_input_spans": 142,
  "session_goal": "Sew pink-orange floral fabric pieces, attach green straps and trim, insert white tag, and trim fabric with scissors.",
  "sub_goals": [
    {
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      "start_time": 0.0,
      "end_time": 600.0,
      "description": "Sew pink-orange fabric, attach green straps and white tag.",
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        {
          "episode_id": 1,
          "start_time": 0.0,
          "end_time": 223.0,
          "description": "Sew pink-orange fabric and inspect seam.",
          "span_indices": [
            0,
            1,
            2,
            3,
            4
          ]
        },
        {
          "episode_id": 2,
          "start_time": 223.0,
          "end_time": 300.0,
          "description": "Align green fabric with pink-orange fabric and trim edges.",
          "span_indices": [
            5,
            6,
            7
          ]
        },
        {
          "episode_id": 3,
          "start_time": 300.0,
          "end_time": 349.5,
          "description": "Sew green strap to pink patterned fabric.",
          "span_indices": [
            8,
            9,
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            13
          ]
        },
        {
          "episode_id": 4,
          "start_time": 349.5,
          "end_time": 477.0,
          "description": "Fold and sew square pink fabric edges, trim excess.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 5,
          "start_time": 477.0,
          "end_time": 568.5,
          "description": "Attach green strap to trimmed pink fabric piece.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 6,
          "start_time": 568.5,
          "end_time": 600.0,
          "description": "Sew white tag into pink fabric piece.",
          "span_indices": [
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          ]
        }
      ]
    },
    {
      "sub_goal_id": 2,
      "start_time": 600.0,
      "end_time": 1367.0,
      "description": "Sew multiple sections of pink-orange floral fabric and attach one green strap.",
      "episodes": [
        {
          "episode_id": 7,
          "start_time": 600.0,
          "end_time": 796.0,
          "description": "Sew initial sections of pink-orange floral fabric.",
          "span_indices": [
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            46,
            47,
            48,
            49
          ]
        },
        {
          "episode_id": 8,
          "start_time": 796.0,
          "end_time": 882.0,
          "description": "Sew green strap onto pink-orange floral fabric.",
          "span_indices": [
            50,
            51,
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            53,
            54
          ]
        },
        {
          "episode_id": 9,
          "start_time": 882.0,
          "end_time": 1015.0,
          "description": "Sew multiple sections of pink-orange floral fabric with adjustments.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 10,
          "start_time": 1015.0,
          "end_time": 1103.0,
          "description": "Continue sewing pink-orange floral fabric sections.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 11,
          "start_time": 1103.0,
          "end_time": 1367.0,
          "description": "Trim excess fabric and sew final sections.",
          "span_indices": [
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          ]
        }
      ]
    },
    {
      "sub_goal_id": 3,
      "start_time": 1367.0,
      "end_time": 1482.0,
      "description": "Sew green trim onto pink-orange floral fabric.",
      "episodes": [
        {
          "episode_id": 12,
          "start_time": 1367.0,
          "end_time": 1457.0,
          "description": "Align and sew green trim onto fabric.",
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          ]
        },
        {
          "episode_id": 13,
          "start_time": 1457.0,
          "end_time": 1482.0,
          "description": "Finish sewing green trim and cut thread.",
          "span_indices": [
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          ]
        }
      ]
    },
    {
      "sub_goal_id": 4,
      "start_time": 1482.0,
      "end_time": 1703.1,
      "description": "Sew final sections of pink-orange floral fabric and trim edges.",
      "episodes": [
        {
          "episode_id": 14,
          "start_time": 1482.0,
          "end_time": 1567.0,
          "description": "Sew final section and cut threads.",
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        },
        {
          "episode_id": 15,
          "start_time": 1567.0,
          "end_time": 1703.1,
          "description": "Trim edges, align, and sew remaining seams.",
          "span_indices": [
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        }
      ]
    }
  ]
}