メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.914639937088 35.0755953690516, 136.914694119993 35.0760628333011, 136.913081881742 35.0758292059055, 136.91300541209 35.0753766253371, 136.912990078522 35.0753626488006, 136.912905120562 35.07487054125, 136.914589180987 35.0750783303828, 136.914639937088 35.0755953690516)) ^^http://www.opengis.net/ont/geosparql#wktLiteral