メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.355534500026 43.7717508010238, 142.355858419804 43.7722807488711, 142.354740989135 43.7726148720272, 142.354308048662 43.7727287552333, 142.354224073413 43.7725792956985, 142.354011303022 43.772188016434, 142.353714421989 43.7716346202118, 142.355254015531 43.7711966010595, 142.355553122564 43.7717454378034, 142.355534500026 43.7717508010238)) ^^http://www.opengis.net/ont/geosparql#wktLiteral