メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.774043841632 35.4036616763832, 136.774036648209 35.403876928677, 136.772756826497 35.4040505225276, 136.771500581204 35.4040890504754, 136.771490958813 35.4038662079746, 136.771460325389 35.4032427457003, 136.772713529021 35.4031992079408, 136.774042767221 35.4029954915754, 136.774043841632 35.4036616763832)) ^^http://www.opengis.net/ont/geosparql#wktLiteral