db.poiConcat.find( {
  ts: "amenity=pub",
  l: {
    *$near: {*
      *$geometry: {*
        *type: 'Point',*
        *coordinates: [ -0.1204, 51.5168 ]*
      *},*
      *$maxDistance: 500*
    *}*
  }
} ).limit(5).pretty();

{
  "_id" : "n26848690",
  "l" : {
    "type" : "Point",
    "coordinates" : [ -0.119473, 51.516787 ]
  },
  "ts" : [
    "addr:housenumber=64-68",
    "addr:street=Kingsway",
    "amenity=pub",
    "name=The Shakespeare's Head",
    "wifi=free"
  ]
}