メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.367952856017 43.0894376996186, 141.367889733698 43.0897034053669, 141.367840481159 43.0899054306027, 141.367742038678 43.0903583587836, 141.367181393464 43.0902817380336, 141.366819998469 43.0902425894247, 141.366543519773 43.09020395485, 141.366202303095 43.0901562398392, 141.366281226488 43.0898200481675, 141.366300799673 43.0897469166552, 141.366461621545 43.0891341933851, 141.366571225448 43.0887329025534, 141.367182996123 43.0888232838836, 141.36743851299 43.0888578158638, 141.368079818137 43.0889498263278, 141.367952856017 43.0894376996186)) ^^http://www.opengis.net/ont/geosparql#wktLiteral