メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.909087718195 35.1065191016842, 136.908923553183 35.1070123568826, 136.908890448384 35.1070273570857, 136.907577218822 35.1066484695475, 136.907548497182 35.1066184764322, 136.907719380827 35.1063137649339, 136.907838451909 35.1061123247406, 136.909069868445 35.1065132888772, 136.909087718195 35.1065191016842)) ^^http://www.opengis.net/ont/geosparql#wktLiteral