{"id": "doc_001", "embedding": [0.1, -0.3, 0.7, 0.2], "category": "test"}
{"id": "doc_002", "embedding": [0.5, 0.1, -0.2, 0.8], "category": "test"}
{"id": "doc_003", "embedding": [0.3, 0.4, 0.1, -0.1], "category": "test"}