メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.351648402031 43.0393776254945, 141.352475151007 43.0394384096451, 141.352433557993 43.0397068140941, 141.352386700815 43.040079899516, 141.352327797012 43.0404834836276, 141.352292611876 43.0407596054756, 141.351798711958 43.0407209154786, 141.351597493744 43.0407051282049, 141.35083694731 43.040653368815, 141.350921239579 43.0399956713442, 141.35100554625 43.0393303777529, 141.351648402031 43.0393776254945)) ^^http://www.opengis.net/ont/geosparql#wktLiteral