メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.180277234931 37.8672156507773, 139.180318397249 37.8673856219291, 139.179847719742 37.8677511579409, 139.180283509649 37.8692733422734, 139.17962113555 37.8684506292535, 139.179501948564 37.8683027908087, 139.179310462524 37.8681574832599, 139.179107083401 37.8683033902972, 139.179058566161 37.8682270838638, 139.179077269464 37.8674045034897, 139.179046884172 37.8670099169938, 139.178985621812 37.8666081876186, 139.178990566025 37.8664161262085, 139.180042817894 37.86624769892, 139.180277234931 37.8672156507773)) ^^http://www.opengis.net/ont/geosparql#wktLiteral