メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.862179723668 34.6757301206042, 137.860429239644 34.6757166259622, 137.860301948175 34.6757625860159, 137.860495946671 34.6746093944127, 137.860668142616 34.6746659334565, 137.86092030097 34.6747228895986, 137.861208907422 34.6747959522176, 137.861445559773 34.6748849422242, 137.861661181817 34.67504819493, 137.861916191084 34.6754111100571, 137.862179723668 34.6757301206042)) ^^http://www.opengis.net/ont/geosparql#wktLiteral