メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.995121655392 37.1453319126271, 140.994618882046 37.1452601122506, 140.994238396054 37.1451229767917, 140.993867192772 37.144942946485, 140.993763434314 37.1447649392398, 140.99361432472 37.1445251427305, 140.993515877457 37.1443608798682, 140.993133342383 37.1439855996788, 140.993515926276 37.1438980033085, 140.993807628994 37.1438824017762, 140.994002358869 37.1438564163555, 140.994082413447 37.1441865089098, 140.9953761999 37.1441865550727, 140.995121655392 37.1453319126271)) ^^http://www.opengis.net/ont/geosparql#wktLiteral