{
  "graph_version": "audited-20260928",
  "encoding": "UTF-8",
  "empty_cells": "Preserved as empty strings, never inferred as null or NaN.",
  "columns": {
    "edges": [
      {
        "name": "head_id",
        "type": "string"
      },
      {
        "name": "head_type",
        "type": "string"
      },
      {
        "name": "relation",
        "type": "string"
      },
      {
        "name": "tail_id",
        "type": "string"
      },
      {
        "name": "tail_type",
        "type": "string"
      },
      {
        "name": "confidence",
        "type": "string"
      },
      {
        "name": "species_source",
        "type": "string"
      },
      {
        "name": "source",
        "type": "string"
      },
      {
        "name": "evidence",
        "type": "string"
      },
      {
        "name": "evidence_type",
        "type": "string"
      }
    ],
    "nodes": [
      {
        "name": "node_id",
        "type": "string"
      },
      {
        "name": "node_type",
        "type": "string"
      },
      {
        "name": "node_name",
        "type": "string"
      },
      {
        "name": "source_databases",
        "type": "string"
      }
    ]
  },
  "node_key": [
    "node_type",
    "node_id"
  ],
  "edge_joins": {
    "head": {
      "head_type": "node_type",
      "head_id": "node_id"
    },
    "tail": {
      "tail_type": "node_type",
      "tail_id": "node_id"
    }
  },
  "confidence": "Source-specific text, including labels and numeric-looking values; not a uniform probability.",
  "source": "Multiple source labels can be separated by |; retain all labels.",
  "evidence": "Original free-form evidence and provenance; preserve verbatim.",
  "node_name": "Recorded display label, which may equal the identifier or its suffix.",
  "splits": {
    "full": "Complete graph table; not a benchmark train/validation/test split."
  }
}