メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.583520060439 33.2468413197733, 131.582943296052 33.2474452054874, 131.58249818676 33.247279295938, 131.5819143585 33.2470044503707, 131.582934575124 33.2464497206001, 131.583549080279 33.2461444798726, 131.583816275083 33.2464473726972, 131.583867095603 33.2465001822372, 131.583520060439 33.2468413197733)) ^^http://www.opengis.net/ont/geosparql#wktLiteral