メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.981881968151 35.2571334882342, 136.9805767901 35.2569419961531, 136.980399404904 35.2570160035782, 136.980214027398 35.256952882192, 136.979876066058 35.2568469751095, 136.979905068073 35.2567525840246, 136.980016683971 35.2564913538894, 136.980245134343 35.2559394652568, 136.980500255816 35.2561219980343, 136.981044538884 35.2565267659571, 136.981286715921 35.2567109664857, 136.981881968151 35.2571334882342)) ^^http://www.opengis.net/ont/geosparql#wktLiteral