メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.714186663456 45.3844205246967, 141.714185150031 45.3844330309872, 141.713066339409 45.3841627347793, 141.712130763354 45.3838547651404, 141.711142487818 45.3835978592608, 141.710204898027 45.3833361219104, 141.708609664535 45.3828351840914, 141.708149474834 45.3826921153936, 141.709050986995 45.3812528253107, 141.709118956615 45.3811443206389, 141.712324023191 45.3811326238449, 141.714821508824 45.381724921266, 141.71435636599 45.383014875289, 141.714349497044 45.3830716455581, 141.714186663456 45.3844205246967)) ^^http://www.opengis.net/ont/geosparql#wktLiteral