メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.795607272162 35.3230542196541, 136.795560072194 35.3233538738653, 136.795126501334 35.3233099592554, 136.794500199978 35.3232465194706, 136.794635006648 35.3226254348533, 136.794725777089 35.3221270356797, 136.795725295866 35.3223046964666, 136.795607272162 35.3230542196541)) ^^http://www.opengis.net/ont/geosparql#wktLiteral