メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.28562527333 43.1009652379299, 141.284026740828 43.1019469835636, 141.282430611763 43.1029251423136, 141.281211827361 43.1018069513636, 141.282825546004 43.100850970619, 141.283206541132 43.1006084590476, 141.284416720401 43.0998729746197, 141.284770488524 43.1001903971113, 141.28562527333 43.1009652379299)) ^^http://www.opengis.net/ont/geosparql#wktLiteral