メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.688504241189 36.7233789053917, 139.687821688767 36.7236678709015, 139.687662444555 36.7234384289491, 139.687587942402 36.7234319300337, 139.687457603961 36.7233931890409, 139.68738052583 36.7233438067395, 139.68732343884 36.7232741029516, 139.687291609853 36.7232247779076, 139.687266459875 36.7231530044259, 139.68707736702 36.7232320489256, 139.686958060482 36.7229919520196, 139.687762555614 36.7227752385831, 139.68783230277 36.7229133242574, 139.688164994336 36.7228098777194, 139.688483557406 36.7233441688152, 139.688504241189 36.7233789053917)) ^^http://www.opengis.net/ont/geosparql#wktLiteral