メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.208647947285 34.7043298079398, 135.208366560871 34.7048186333382, 135.207197657888 34.7044732058109, 135.207421960368 34.7040050769697, 135.207734056113 34.7040997428104, 135.207851508801 34.7038509906544, 135.208811667113 34.7040694532229, 135.208647947285 34.7043298079398)) ^^http://www.opengis.net/ont/geosparql#wktLiteral