メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.151831612117 34.6700656209929, 135.151437058012 34.6704423886073, 135.151437435239 34.6704806990399, 135.151285971492 34.6706124318783, 135.151035734971 34.6704090262759, 135.151049263497 34.6703976668642, 135.150606583587 34.6700423012894, 135.150811823459 34.6698313282783, 135.151065339613 34.6695366430975, 135.151389353713 34.6697530754613, 135.151831612117 34.6700656209929)) ^^http://www.opengis.net/ont/geosparql#wktLiteral