メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.624877313549 34.9364845366166, 136.623759558853 34.9364378009076, 136.622453465487 34.9363764533452, 136.622077911665 34.9363659779891, 136.62210740437 34.9363133581719, 136.622142711677 34.9358398982617, 136.622200088214 34.9351286291177, 136.623092906954 34.9351977991616, 136.624319397988 34.9352694764787, 136.625017786174 34.9353093455357, 136.625016087038 34.9353504143241, 136.624892488194 34.9363876191262, 136.624877313549 34.9364845366166)) ^^http://www.opengis.net/ont/geosparql#wktLiteral