メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.873088500198 43.0161086632705, 142.872944894618 43.0160012763835, 142.872938613373 43.015996176582, 142.872731384103 43.015828582129, 142.872062155526 43.0154248671866, 142.872047109152 43.0154155253595, 142.872156871529 43.0153514227369, 142.87307879344 43.0145671714666, 142.873958319521 43.0151103247626, 142.874150914605 43.0152239829678, 142.873300121105 43.0159428024705, 142.873088500198 43.0161086632705)) ^^http://www.opengis.net/ont/geosparql#wktLiteral