メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.56727136717 36.5159435020646, 136.567439310722 36.5173278074877, 136.566028956042 36.5173141392141, 136.565806928624 36.5173130224855, 136.564490005755 36.5173035749035, 136.56455038317 36.5165004635446, 136.564626122382 36.5163728443636, 136.564604273942 36.5161809095274, 136.565656163252 36.5160911604799, 136.56727136717 36.5159435020646)) ^^http://www.opengis.net/ont/geosparql#wktLiteral