メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.37470957945 43.0755856300644, 141.374617298964 43.0759352341548, 141.373986695295 43.0758474940672, 141.373675169111 43.0758079766796, 141.37292662177 43.0757027298922, 141.372448653274 43.0756357010393, 141.372589524774 43.0750820228425, 141.372732207583 43.0745154888759, 141.373323794371 43.0746000541518, 141.37396029494 43.07468362403, 141.374517113862 43.0747508273891, 141.374922000241 43.0748025194274, 141.374761335859 43.075366668584, 141.37470957945 43.0755856300644)) ^^http://www.opengis.net/ont/geosparql#wktLiteral