メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.321486553636 43.0512748077697, 141.321469700496 43.051368419369, 141.321351213075 43.0518735475908, 141.320240919714 43.0517183874219, 141.3198577451 43.0516648471277, 141.319989966082 43.051146540195, 141.319999603042 43.0511117351918, 141.320079668931 43.0507319046598, 141.320159410907 43.0504177591812, 141.321559322918 43.0509774830175, 141.321486553636 43.0512748077697)) ^^http://www.opengis.net/ont/geosparql#wktLiteral