メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.012429380565 37.2973140051163, 141.011819966745 37.2972310893556, 141.011056369555 37.2971271909217, 141.006985908624 37.2964705777903, 141.007322270065 37.2951387105293, 141.007382916799 37.2948577879745, 141.016118546861 37.2960007540492, 141.015750096583 37.2977657566034, 141.012429380565 37.2973140051163)) ^^http://www.opengis.net/ont/geosparql#wktLiteral