メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.206958126593 42.9942313371578, 143.207824786206 42.994283787722, 143.208237886143 42.9943183729268, 143.208739990944 42.9943588924003, 143.206040850714 42.9959186035575, 143.205814591142 42.996113547861, 143.20584604354 42.9958187476462, 143.205896769387 42.9955062051808, 143.205950926647 42.9950754105496, 143.206055118955 42.9943246937062, 143.206056214532 42.9941791739588, 143.206958126593 42.9942313371578)) ^^http://www.opengis.net/ont/geosparql#wktLiteral