メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.765720735932 35.4309500118069, 136.765779643219 35.4310772070406, 136.765363468167 35.4312261150157, 136.765296795174 35.4311031196977, 136.765366816296 35.4310800756432, 136.765289880886 35.4309358860942, 136.765471377942 35.4308666265811, 136.765455973724 35.4308411546975, 136.76562968537 35.4307803548194, 136.765720735932 35.4309500118069)) ^^http://www.opengis.net/ont/geosparql#wktLiteral