メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.770202764319 35.4443933716315, 136.768676123424 35.4445917914078, 136.768716072483 35.4448152586705, 136.768041507114 35.4448932212897, 136.767634719193 35.4449402301811, 136.767428074479 35.4449640934311, 136.767351578741 35.4445355491846, 136.768643177081 35.4443881709388, 136.770170207349 35.4441974285532, 136.770202764319 35.4443933716315)) ^^http://www.opengis.net/ont/geosparql#wktLiteral