メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.391384437278 43.0857353508135, 141.390709792568 43.0860040641043, 141.389974642965 43.0862969327941, 141.389630935804 43.0858591604923, 141.389611702172 43.0858348231204, 141.389398361796 43.0855644207723, 141.389276277857 43.0854097610485, 141.389169703839 43.0852711833301, 141.388966168789 43.0850066193299, 141.38966463715 43.0847292973509, 141.389723686735 43.0847058997162, 141.390372846513 43.0844547862054, 141.390934927766 43.0842481663492, 141.391922843562 43.0855002052812, 141.391384437278 43.0857353508135)) ^^http://www.opengis.net/ont/geosparql#wktLiteral