メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.755832783798 43.1974676932715, 141.755383049486 43.1978963013227, 141.754486949406 43.1974313564289, 141.754460116793 43.1974151357623, 141.755273325071 43.196609594977, 141.756194779638 43.1970825899797, 141.755832783798 43.1974676932715)) ^^http://www.opengis.net/ont/geosparql#wktLiteral