メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.739571457132 35.4356993357739, 136.739330519286 35.4353116046513, 136.739305820189 35.4352718368701, 136.741038390084 35.434881599061, 136.74101121256 35.4348139017048, 136.741299698874 35.4347423158966, 136.741320909929 35.4348237946115, 136.741469987712 35.4352560887558, 136.739571457132 35.4356993357739)) ^^http://www.opengis.net/ont/geosparql#wktLiteral