メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.896210318045 43.0100435708377, 142.895789056201 43.0097850193305, 142.895727661495 43.009747317093, 142.895684692627 43.0097209745287, 142.896020447768 43.0094333320718, 142.896648716531 43.008884522016, 142.896653638116 43.0088875883408, 142.896761182136 43.0089536553082, 142.897195658708 43.0092204978362, 142.896210318045 43.0100435708377)) ^^http://www.opengis.net/ont/geosparql#wktLiteral