メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.754163870239 35.4093238164897, 136.751937782387 35.4096243190439, 136.751840018431 35.4091632215278, 136.752205929114 35.4091117968446, 136.752792023796 35.4090290817275, 136.753379509788 35.4089511567335, 136.753812351791 35.4088968572177, 136.753999304624 35.4088711556922, 136.754070653407 35.4090655485012, 136.754163870239 35.4093238164897)) ^^http://www.opengis.net/ont/geosparql#wktLiteral