メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.773565307588 35.4419044824795, 136.77358317241 35.4424341012299, 136.773581904506 35.4425268762185, 136.772610841175 35.4424254962836, 136.77209748764 35.4423410528157, 136.772274138946 35.4417337951178, 136.77240806727 35.441276323236, 136.772418767904 35.4412523091469, 136.773518606777 35.4409607341287, 136.773565307588 35.4419044824795)) ^^http://www.opengis.net/ont/geosparql#wktLiteral