メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.371464495929 43.0577939115275, 141.371787315536 43.0580367756046, 141.3715109731 43.0582619385612, 141.3713021275 43.0584321032172, 141.371062472416 43.0586318990468, 141.370820252581 43.0588065729057, 141.370493133018 43.059042470566, 141.369920394505 43.0594554752217, 141.369914093497 43.0594600683097, 141.369238159042 43.0599524523637, 141.368466566926 43.0603525252088, 141.367753321533 43.0593441983387, 141.368709798867 43.0586375793595, 141.369317256872 43.0581910193551, 141.369730535098 43.0578894081056, 141.369892483274 43.0577712149155, 141.370154035932 43.0575827714978, 141.370254416965 43.057511385001, 141.370669216595 43.0572163041625, 141.371464495929 43.0577939115275)) ^^http://www.opengis.net/ont/geosparql#wktLiteral