メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.696342068982 34.8283699378497, 134.694611223356 34.8288837494261, 134.694104535944 34.8277726976079, 134.695030130064 34.8275718907751, 134.694983614439 34.8272377036266, 134.695767439783 34.8271082364482, 134.696342068982 34.8283699378497)) ^^http://www.opengis.net/ont/geosparql#wktLiteral