メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.467825078293 35.0108066502068, 138.469343359989 35.0109576637025, 138.470875535354 35.0110950698879, 138.47073595889 35.0115326721486, 138.47069215846 35.0116801366874, 138.470635841408 35.0118694312158, 138.470494389519 35.0123617530174, 138.468153311151 35.0121759737971, 138.467605483073 35.0121420321954, 138.466708839662 35.0120698978663, 138.465564836102 35.0119950133755, 138.465639911824 35.0118600962447, 138.46581798677 35.0115849855764, 138.465989696189 35.0114292467719, 138.466295270071 35.0111033196825, 138.466724546619 35.010704602447, 138.467825078293 35.0108066502068)) ^^http://www.opengis.net/ont/geosparql#wktLiteral