メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.34570295001 43.1144571155507, 141.345700570827 43.1144687005305, 141.345553472088 43.1150947560685, 141.344806750609 43.1150068457758, 141.343771056173 43.1148748652529, 141.343788067741 43.1147956039592, 141.343755923636 43.1142106003554, 141.343748451099 43.1140733378796, 141.343742061528 43.1140055650363, 141.344191584921 43.1140530833823, 141.344269749051 43.1136425866055, 141.345856605457 43.1138419409755, 141.34570295001 43.1144571155507)) ^^http://www.opengis.net/ont/geosparql#wktLiteral