メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.832206757339 34.6892968264902, 135.831902187395 34.689300209818, 135.831896537995 34.6887075988347, 135.831903778568 34.6884471554013, 135.832473141961 34.6884482205779, 135.832477538821 34.6888384123002, 135.832456485227 34.6889884014751, 135.832378386789 34.6891126741553, 135.832206757339 34.6892968264902)) ^^http://www.opengis.net/ont/geosparql#wktLiteral