メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.765629518776 35.4114413436691, 136.765375794695 35.4115136738847, 136.765564836291 35.4106059435849, 136.765744561264 35.4106249154737, 136.765724749564 35.4108393502978, 136.76610594004 35.4108733510066, 136.766583038367 35.4108556937501, 136.766584150008 35.4111532246765, 136.765629518776 35.4114413436691)) ^^http://www.opengis.net/ont/geosparql#wktLiteral