メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.851027336993 37.4741471593304, 138.849465897077 37.4743694485001, 138.848860417668 37.4744520482982, 138.848895833713 37.474048701814, 138.848945325479 37.4737797759015, 138.849061403381 37.4733905549185, 138.84918808706 37.4730357927601, 138.850712290024 37.4731585669513, 138.850732546317 37.4731601956021, 138.850810592873 37.4734401540807, 138.851027336993 37.4741471593304)) ^^http://www.opengis.net/ont/geosparql#wktLiteral