@prefix locn: <http://w3.org/ns/locn#> .
@prefix sf: <http://www.opengis.net/ont/sf#> .
@prefix geo: <http://www.w3.org/2003/01/geo/wgs84_pos#> .

<ex:a> a locn:Location ;
  locn:geometry [ a sf:Point ;
                    geo:lat "51.477811" ;
					geo:long "-0.001475" ] .