メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.457374751265 43.0400244898104, 144.457375611993 43.0400591447154, 144.457166426035 43.0407328358048, 144.456917578373 43.0413434355768, 144.45681010797 43.0413676624792, 144.456436390576 43.0404111143347, 144.455762097255 43.0390021135922, 144.457095787857 43.0386679931115, 144.457114210989 43.0387165148447, 144.457209489156 43.0389671496742, 144.457278054976 43.0391572558314, 144.457342059764 43.0394127143025, 144.457367414026 43.0397345324639, 144.457374751265 43.0400244898104)) ^^http://www.opengis.net/ont/geosparql#wktLiteral