メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.302218421435 43.0978214187176, 141.30230958078 43.0978969327508, 141.302610506948 43.0981858715151, 141.302913657295 43.0984613949374, 141.303735670361 43.0992396956454, 141.301211699184 43.0984544065359, 141.299366051075 43.0978780135711, 141.299903102791 43.0975554438299, 141.299873260263 43.0975365591816, 141.300430496942 43.0971929853519, 141.300449365814 43.0972140293522, 141.30046337357 43.0972266638096, 141.300804260192 43.0970154108374, 141.301146956075 43.0968235119287, 141.301195000303 43.0968632239429, 141.30202677276 43.0976344453544, 141.302218421435 43.0978214187176)) ^^http://www.opengis.net/ont/geosparql#wktLiteral