メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.34219769349 43.7767026397283, 142.341816771605 43.7768014894083, 142.341923615204 43.7763109456757, 142.342382999248 43.7761853958321, 142.342723760866 43.7760856098829, 142.343277756967 43.7759233238356, 142.343833018696 43.7757573247128, 142.344047246104 43.7761629700957, 142.342823236284 43.776525089563, 142.342600256009 43.7765906373712, 142.34219769349 43.7767026397283)) ^^http://www.opengis.net/ont/geosparql#wktLiteral