メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.818019863051 35.3063382697571, 136.818039641043 35.3063386088899, 136.81931907165 35.3063596823593, 136.819574621067 35.3063640781688, 136.820380866802 35.3063692052279, 136.82007833107 35.3071979251038, 136.81976545281 35.308012390324, 136.819450493938 35.3088400168179, 136.818707845902 35.3086402770845, 136.817771983859 35.3085139895644, 136.816577402278 35.3083448341086, 136.816660655766 35.3073668236622, 136.816714151534 35.3068340842778, 136.816741029328 35.3063133099387, 136.818019863051 35.3063382697571)) ^^http://www.opengis.net/ont/geosparql#wktLiteral