メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.996133961316 33.7278201707019, 135.996127923342 33.7282263352476, 135.994588308332 33.7282540993845, 135.99457925876 33.7281278684393, 135.994576246154 33.7278831553086, 135.994542342256 33.7274823440367, 135.996090544853 33.7274210513029, 135.996133961316 33.7278201707019)) ^^http://www.opengis.net/ont/geosparql#wktLiteral