メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.353088275934 43.0243929386255, 141.351564198421 43.0243248595153, 141.351227638334 43.0243122998082, 141.351244515001 43.0241608000504, 141.351369669988 43.023177013188, 141.351838902819 43.0232081259532, 141.35310855132 43.0232501541554, 141.353112226063 43.0233335246278, 141.353130537878 43.0237416559405, 141.353115089319 43.023979815439, 141.353088275934 43.0243929386255)) ^^http://www.opengis.net/ont/geosparql#wktLiteral