{
  "session_id": "session_data_20260408_160121",
  "total_duration_s": 2714.9,
  "n_input_spans": 204,
  "session_goal": "Thread sewing machine, cut and sew patterned fabric, sew paisley fabric with pink and orange trims, and sew red paisley fabric with green fabric and orange trim.",
  "sub_goals": [
    {
      "sub_goal_id": 1,
      "start_time": 0.0,
      "end_time": 300.0,
      "description": "Prepare sewing machine, cut and sew patterned fabric with pink scissors and sewing machine.",
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        {
          "episode_id": 1,
          "start_time": 0.0,
          "end_time": 37.0,
          "description": "Thread sewing machine and cut patterned fabric with pink scissors.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 2,
          "start_time": 37.0,
          "end_time": 131.0,
          "description": "Sew patterned fabric and cut excess thread using sewing machine.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 3,
          "start_time": 131.0,
          "end_time": 212.0,
          "description": "Align edges and sew patterned fabric with sewing machine and pink scissors.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 4,
          "start_time": 212.0,
          "end_time": 273.0,
          "description": "Sew and trim patterned fabric, then move sewn piece aside.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 5,
          "start_time": 273.0,
          "end_time": 300.0,
          "description": "Align two patterned fabric pieces and position under sewing machine needle.",
          "span_indices": [
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          ]
        }
      ]
    },
    {
      "sub_goal_id": 2,
      "start_time": 300.0,
      "end_time": 1200.0,
      "description": "Sew paisley-patterned fabric with pink and orange trims using sewing machine.",
      "episodes": [
        {
          "episode_id": 6,
          "start_time": 300.0,
          "end_time": 472.0,
          "description": "Sew pink trim onto large paisley fabric and inspect sewn piece.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 7,
          "start_time": 472.0,
          "end_time": 524.0,
          "description": "Sew small triangular paisley fabric with pink trim using sewing machine.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 8,
          "start_time": 524.0,
          "end_time": 592.0,
          "description": "Sew orange trim onto small paisley fabric and cut orange fabric piece.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 9,
          "start_time": 592.0,
          "end_time": 689.0,
          "description": "Sew orange fabric strip onto paisley fabric and trim pink edge with scissors.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 10,
          "start_time": 689.0,
          "end_time": 808.0,
          "description": "Trim paisley fabric and sew orange strip onto paisley fabric piece.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 11,
          "start_time": 808.0,
          "end_time": 876.0,
          "description": "Sew large and small paisley fabric pieces and reposition under needle.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 12,
          "start_time": 876.0,
          "end_time": 1014.0,
          "description": "Incorporate green fabric and sew orange trim onto patterned fabric pieces.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 13,
          "start_time": 1014.0,
          "end_time": 1107.0,
          "description": "Sew large patterned fabric with orange trim and place on finished stack.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 14,
          "start_time": 1107.0,
          "end_time": 1200.0,
          "description": "Sew new patterned fabric piece with folded edges and final sections.",
          "span_indices": [
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          ]
        }
      ]
    },
    {
      "sub_goal_id": 3,
      "start_time": 1200.0,
      "end_time": 1878.5,
      "description": "Sew red paisley fabric with green fabric and orange trim using sewing machine.",
      "episodes": [
        {
          "episode_id": 15,
          "start_time": 1200.0,
          "end_time": 1239.0,
          "description": "Align green fabric with red paisley and cut excess fabric with pink scissors.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 16,
          "start_time": 1239.0,
          "end_time": 1358.0,
          "description": "Sew main seams of red paisley fabric using sewing machine.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 17,
          "start_time": 1358.0,
          "end_time": 1500.0,
          "description": "Sew new red paisley piece with orange trim using sewing machine.",
          "span_indices": [
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        },
        {
          "episode_id": 18,
          "start_time": 1500.0,
          "end_time": 1612.9,
          "description": "Cut and sew red paisley fabric, then sew green fabric and place aside.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 19,
          "start_time": 1612.9,
          "end_time": 1731.8,
          "description": "Sew red paisley and green fabric, then cut and sew red paisley fabric.",
          "span_indices": [
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        },
        {
          "episode_id": 20,
          "start_time": 1731.8,
          "end_time": 1800.0,
          "description": "Cut and sew small red paisley strips onto main fabric using sewing machine.",
          "span_indices": [
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          ]
        },
        {
          "episode_id": 21,
          "start_time": 1800.0,
          "end_time": 1878.5,
          "description": "Cut and sew patterned fabric strips onto large fabric piece and thread needle.",
          "span_indices": [
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        }
      ]
    }
  ]
}