bedrock-samples/behavior_pack/loot_tables/entities/polar_bear.json

{
    "pools": [
     {
        "rolls": 1,
        "entries": [
          {
            "type": "item",
            "name": "minecraft:fish",
            "weight": 3,
            "functions": [
              {
                "function": "set_count",
                "count": {
                  "min": 0,
                  "max": 2
                }
              },
              {
                "function": "furnace_smelt",
                "conditions": [
                  {
                    "condition": "entity_properties",
                    "entity": "this",
                    "properties": {
                      "on_fire": true
                    }
                  }
                ]
              },
              {
                "function": "looting_enchant",
                "count": {
                  "min": 0,
                  "max": 1
                }
              }
            ]
          }
        ]
      },
      {
      "rolls": 1,
        "entries": [
                {
                    "type": "item",
                    "name": "minecraft:salmon",
                    "weight": 1,
                  "functions": [
                    {
                      "function": "set_count",
                      "count": {
                        "min": 0,
                        "max": 2
                      }
                    },
                    {
                      "function": "furnace_smelt",
                      "conditions": [
                        {
                          "condition": "entity_properties",
                          "entity": "this",
                          "properties": {
                            "on_fire": true
                          }
                        }
                      ]
                    },
                    {
                      "function": "looting_enchant",
                      "count": {
                        "min": 0,
                        "max": 1
                      }
                    }
                  ]
                }
            ]
        }
    ]
}