メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.40280886421 43.0691020756431, 141.402997939706 43.0692341479123, 141.40322698384 43.0693964747621, 141.403662809782 43.0696313636841, 141.403438868146 43.0698507537985, 141.403144156101 43.070117021875, 141.402466393699 43.0708220534579, 141.402148420024 43.0705553298364, 141.401729713019 43.0702685185919, 141.401061155993 43.0699788683125, 141.399934587299 43.0695132247052, 141.400606834641 43.0687915677555, 141.401330984403 43.0680538343748, 141.402210395751 43.0686480263832, 141.40280886421 43.0691020756431)) ^^http://www.opengis.net/ont/geosparql#wktLiteral