メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.742166495539 35.4115253578265, 136.741982416849 35.4118875193196, 136.740731624573 35.4114497510604, 136.740817384242 35.41129385999, 136.740924294334 35.4110907205224, 136.742166495539 35.4115253578265)) ^^http://www.opengis.net/ont/geosparql#wktLiteral