メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.94241345173 37.7926257104597, 140.942361761233 37.7940813317334, 140.940616484873 37.7940262147444, 140.940671272516 37.7924371023301, 140.940688795757 37.7920005108409, 140.942278677807 37.7915133821555, 140.942450647984 37.7914646040106, 140.94241345173 37.7926257104597)) ^^http://www.opengis.net/ont/geosparql#wktLiteral