[
  {
    "evidence_id": "demo-1",
    "platform": "reddit",
    "source_record_id": "synthetic-1",
    "source_url": "https://example.com/illustrative/reddit/1",
    "source_context": "Synthetic coffee-mug research exercise; not an actual post or customer statement.",
    "observed_at": "2026-11-05T00:00:00Z",
    "text": "Constructed example: ask how the lid seal is cleaned.",
    "theme": "cleaning",
    "sample_type": "synthetic"
  },
  {
    "evidence_id": "demo-2",
    "platform": "youtube",
    "source_record_id": "synthetic-2",
    "source_url": "https://example.com/illustrative/youtube/2",
    "source_context": "Synthetic coffee-mug research exercise; not an actual post or customer statement.",
    "observed_at": "2026-11-05T00:00:00Z",
    "text": "Constructed example: ask whether replacement seals are documented.",
    "theme": "cleaning",
    "sample_type": "synthetic"
  },
  {
    "evidence_id": "demo-3",
    "platform": "tiktok",
    "source_record_id": null,
    "source_url": "https://example.com/illustrative/tiktok/3",
    "source_context": "Synthetic coffee-mug research exercise; not an actual post or customer statement.",
    "observed_at": "2026-11-05T00:00:00Z",
    "text": "Constructed example: ask which cup-holder measurements were tested.",
    "theme": "fit",
    "sample_type": "synthetic"
  },
  {
    "evidence_id": "demo-4",
    "platform": "reddit",
    "source_record_id": "synthetic-4",
    "source_url": "https://example.com/illustrative/reddit/4",
    "source_context": "Synthetic coffee-mug research exercise; not an actual post or customer statement.",
    "observed_at": "2026-11-05T00:00:00Z",
    "text": "Constructed example: prefer a drink to cool sooner rather than stay hot.",
    "theme": "counterexample",
    "sample_type": "synthetic"
  }
]