メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.371285194485 43.7620708584856, 142.37161970567 43.762648337873, 142.370104535283 43.7630911994785, 142.369798288293 43.7625344342321, 142.369786760661 43.7625134565331, 142.369462918487 43.7619489544935, 142.369455567392 43.7619358826101, 142.370984156917 43.761501660063, 142.371285194485 43.7620708584856)) ^^http://www.opengis.net/ont/geosparql#wktLiteral