var office =
{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "properties": {
        "name": "消防署",
        "dep": "fire"
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
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        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "name": "酒田警察署",
        "dep": "police"
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          139.85955119132998,
          38.92839653985563
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "name": "酒田消防署",
        "dep": "fire"
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          139.83735859394076,
          38.90975679696275
        ]
      }
    }
  ]
}