@prefix geo:      <http://www.opengis.net/ont/geosparql#>.
@prefix gr:       <http://purl.org/goodrelations/v1#>.
@prefix rdfs:     <http://www.w3.org/2000/01/rdf-schema#>.
@prefix spacerel: <http://data.ordnancesurvey.co.uk/ontology/spatialrelations/>.