{
  "pairs": [
    {
      "id": "positive",
      "query": "What is the capital of China?",
      "document": "The capital of China is Beijing."
    },
    {
      "id": "negative",
      "query": "What is the capital of China?",
      "document": "Gravity attracts bodies toward one another."
    }
  ],
  "instruction": null,
  "return_margin": false
}