メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.747363425008 35.4100563347791, 136.746669330651 35.4100639292268, 136.746657848041 35.4100304397113, 136.746199617922 35.4100360308586, 136.746016720522 35.4100417325998, 136.746009680525 35.4098984017346, 136.746014165062 35.4097884893695, 136.746020177341 35.4097486526703, 136.746026258146 35.4097040974384, 136.746836771025 35.409671068599, 136.747377681046 35.4096615333039, 136.747373972878 35.4098545439282, 136.747363425008 35.4100563347791)) ^^http://www.opengis.net/ont/geosparql#wktLiteral