メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.843616204116 43.0825325572385, 142.8419419143 43.0821628033085, 142.839643657466 43.0816442635393, 142.840079852874 43.0805815034187, 142.840406916686 43.080654503953, 142.841124687704 43.0808234516692, 142.841332085235 43.0808292701796, 142.841661090982 43.0807447177561, 142.842019232061 43.0807565759277, 142.84406372137 43.0811885467615, 142.844050732086 43.0812593655557, 142.843917345323 43.08216555763, 142.843723274592 43.0824471122789, 142.843616204116 43.0825325572385)) ^^http://www.opengis.net/ont/geosparql#wktLiteral