メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.911540475996 35.5344446686558, 136.911225267587 35.5344832610658, 136.911171861831 35.5330174890453, 136.911099663914 35.5316312831069, 136.911087001403 35.5312330721986, 136.912025519075 35.5317170702022, 136.911609685337 35.5335400161119, 136.911606895645 35.5335522506981, 136.911556420394 35.5339264889359, 136.911540475996 35.5344446686558)) ^^http://www.opengis.net/ont/geosparql#wktLiteral