db.regions.find({
    $or: [{
        location: {
          $geoIntersects: {
             $geometry: [{
                type: "Polygon",
                coordinates: [ [ [-54.008789,-29.592565],
                                    [-53.547363,-29.420460],
                                    [-53.459473,-29.878755],
                                    [-53.964844,-29.821583],
                                    [-54.008789,-29.592565] ] ]
             }
             ]
          }
       },
       location: {
          $geoIntersects: {
             $geometry: {
                type: "Polygon",
                coordinates: [ [ [ -47.705147, -21.167139 ],
                                [ -47.795612, -21.090562 ],
                                [ -47.909596, -21.167139 ],
                                [ -47.808744, -21.245238 ],
                                [ -47.705147, -21.167139 ]  ] ]
             }
          }
       }
   }]
})