メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.01655710562 37.7665575990441, 139.015898155909 37.7665851196554, 139.015874107499 37.7662384733632, 139.015804965098 37.765203020957, 139.017198008448 37.7651698874208, 139.017209521167 37.7665277084698, 139.01655710562 37.7665575990441)) ^^http://www.opengis.net/ont/geosparql#wktLiteral