メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.242272959194 34.8168343138692, 137.241822061134 34.8168909532018, 137.241357524106 34.8169814054301, 137.240852017112 34.8171056886916, 137.240510479631 34.8172185961665, 137.240155284365 34.817342780054, 137.239608810306 34.8175121588212, 137.239498689467 34.8164642224227, 137.239443660732 34.8159796953887, 137.240277113314 34.8158552077733, 137.241657167049 34.8157528972474, 137.242968976189 34.8157520363594, 137.242901519151 34.8168000956188, 137.242272959194 34.8168343138692)) ^^http://www.opengis.net/ont/geosparql#wktLiteral