メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.418427979518 43.0699676464515, 141.419228119252 43.0699114252358, 141.419346772111 43.0699335961146, 141.419743669849 43.0699093984399, 141.420433438276 43.0704471438716, 141.420895590618 43.0708271051723, 141.421601380779 43.0713868310405, 141.421545218937 43.0716535350897, 141.421325539967 43.0725646106701, 141.421091269426 43.073069989244, 141.419464808525 43.072742845093, 141.417516035722 43.0723373094326, 141.41647775625 43.0721176417052, 141.416497558765 43.0719235353576, 141.416629336251 43.0715508345725, 141.416845906102 43.0709805626314, 141.417042489401 43.07042667193, 141.417150819317 43.0701415008252, 141.417350187618 43.0700615795192, 141.418427979518 43.0699676464515)) ^^http://www.opengis.net/ont/geosparql#wktLiteral