メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.365655131345 43.053623481333, 141.36533692637 43.0537969875952, 141.365289924538 43.0538244042201, 141.364402791388 43.0543065463199, 141.364796991687 43.0533235015217, 141.365062661611 43.0526880861195, 141.365296631627 43.0528970164193, 141.365947387514 43.0534670048992, 141.365655131345 43.053623481333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral