メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.352073816619 43.0914054779121, 141.352928572951 43.0915215422854, 141.352824578998 43.0919465650031, 141.352745307834 43.0922688910776, 141.352652706575 43.0926496959636, 141.35211705742 43.0925830430454, 141.351789018709 43.0925397490441, 141.351100475059 43.0924487532038, 141.35126439927 43.0918111771619, 141.351283063931 43.0917554832334, 141.351382143011 43.0913193116187, 141.351896480116 43.0913858714822, 141.352073816619 43.0914054779121)) ^^http://www.opengis.net/ont/geosparql#wktLiteral