メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.386021584999 34.7750885633329, 137.385742228458 34.7752359681854, 137.385628010203 34.7753261746257, 137.385396544629 34.7755816684329, 137.385285604325 34.7757020115899, 137.385136936188 34.7759180603236, 137.385028156273 34.776040935196, 137.384887664583 34.7761466815111, 137.384061354442 34.7754090910286, 137.384670866225 34.7749039014505, 137.385337724131 34.7743452289559, 137.385352449339 34.7743618239342, 137.385629505424 34.7746510665349, 137.386021584999 34.7750885633329)) ^^http://www.opengis.net/ont/geosparql#wktLiteral