メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.728757547327 34.4993912780837, 135.728815332175 34.4995859423777, 135.729130296631 34.4995748092283, 135.729144555947 34.5000654646598, 135.728731161137 34.5000728538157, 135.728710988608 34.4995893681245, 135.728697193776 34.4995328795619, 135.728607611743 34.4993898163138, 135.728581200753 34.4985538784116, 135.728745352051 34.49855227275, 135.728757547327 34.4993912780837)) ^^http://www.opengis.net/ont/geosparql#wktLiteral