var triangleUmap =		// この1行だけ追加した。
{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "properties": {
        "name": "三角地帯",
        "description": "飯森山の三角形"
      },
      "geometry": {
        "type": "Polygon",
        "coordinates": [
          [ [ 139.8236417770386,  38.89282820375738 ],
            [ 139.82629179954532, 38.89027290895218 ],
            [ 139.8214423656464,  38.89045662602478 ],
            [ 139.8236417770386,  38.89282820375738 ]]]}},
    {
      "type": "Feature",
      "properties": {
        "name": "南洲神社",
        "description": "西郷隆盛像あり"
      },
      "geometry": {
        "type": "Point",
        "coordinates": [ 139.82450008392337, 38.88983866670988 ]}}
  ]
}