PREFIX geo: <http://www.bigdata.com/rdf/geospatial#>

# all cities with -50 < lat < 50 -> Barcelona, SF, Johannesburg
SELECT ?res WHERE {
  SERVICE geo:search {
    ?res geo:search "inRectangle" .
    ?res geo:predicate <http://coord> .
    ?res geo:spatialRectangleSouthWest "-50#-180" .
    ?res geo:spatialRectangleNorthEast "50#180" .
    ?res geo:timeStart "0" .
    ?res geo:timeEnd "0" .
  }
}