メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.18390790763 34.2359453427835, 135.183627091982 34.2359305129091, 135.183234320564 34.2359346580788, 135.18315192247 34.2351390448337, 135.183915650361 34.2352731684144, 135.183940142784 34.2352836146915, 135.18390790763 34.2359453427835)) ^^http://www.opengis.net/ont/geosparql#wktLiteral