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    "key": "building",
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    "key": "source",
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    "key": "addr:street",
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    "key": "name",
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    "key": "addr:postcode",
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    "key": "natural",
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  },
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  },
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  },
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  },
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    "key": "start_date",
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  },
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    "key": "addr:district",
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  },
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    "key": "layer",
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    "key": "type",
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    "key": "operator",
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    "key": "crossing",
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    "key": "tiger:county",
    "count": 12488330
  },
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    "key": "source:addr",
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    "key": "footway",
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    "key": "ref:bag",
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  },
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    "key": "addr:place",
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  },
  {
    "key": "tiger:reviewed",
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  },
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    "key": "leisure",
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    "key": "addr:suburb",
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  },
  {
    "key": "ele",
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    "key": "tracktype",
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    "key": "addr:neighbourhood",
    "count": 10130674
  },
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    "key": "addr:hamlet",
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    "key": "addr:province",
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    "key": "leaf_type",
    "count": 9511262
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  {
    "key": "addr:full",
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  }
]