{
  "pools": [
    {
      "rolls": 1,
      "entries": [
        {
          "type": "item",
          "name": "minecraft:gravel"
        }
      ]
    },
    {
        "rolls": 1,
        "entries": [
          {
            "type": "item",
            "weight": 9,
            "name": "minecraft:air"
          },
          {
            "type": "item",
            "weight": 1,
            "name": "minecraft:flint"
          }
        ]
      }
  ]
}