メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.353645239539 43.0607287770491, 141.35342351312 43.0616286655842, 141.353254207121 43.062248279472, 141.352475230345 43.0621523578801, 141.352573889894 43.0617341786943, 141.351797791118 43.0616387675776, 141.351860243942 43.0614145541294, 141.352076651798 43.0605388204256, 141.352320177215 43.0595854430179, 141.353887911455 43.0597929013866, 141.353645239539 43.0607287770491)) ^^http://www.opengis.net/ont/geosparql#wktLiteral