メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.245403138047 36.6309605564627, 137.245177459816 36.6312428356616, 137.244350620124 36.6308207889659, 137.243647892687 36.630474415497, 137.243756944118 36.6303061374412, 137.244251571759 36.6297153619881, 137.244312990101 36.6297125744773, 137.244341382123 36.6294719688921, 137.244364075588 36.6292795958117, 137.244446093655 36.6287444324209, 137.24510996217 36.6290801235171, 137.245794938764 36.6294097424738, 137.246359672741 36.6296612154921, 137.246098516075 36.6300220276765, 137.245635699411 36.6306624986733, 137.245403138047 36.6309605564627)) ^^http://www.opengis.net/ont/geosparql#wktLiteral