メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.019605160875 35.3282045914498, 136.018504561896 35.3284249416273, 136.018136571012 35.3284962030858, 136.017482553274 35.3262983715849, 136.018890780686 35.3259679333488, 136.018976175169 35.3259305244815, 136.019605160875 35.3282045914498)) ^^http://www.opengis.net/ont/geosparql#wktLiteral