メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.319676447236 43.1032804326116, 141.320129363486 43.1037631149785, 141.320445825932 43.1040728769881, 141.320136175578 43.1042449850641, 141.319752223245 43.1044431412857, 141.319469334452 43.1046098390338, 141.319397315573 43.104649972722, 141.31897315078 43.1048791667308, 141.318028741806 43.1041732663688, 141.317186388089 43.1035111591898, 141.317567002929 43.1032421632552, 141.317910315384 43.1030150598121, 141.318258960112 43.1027842000337, 141.31844130525 43.1026586737113, 141.319047954733 43.1026546094077, 141.319676447236 43.1032804326116)) ^^http://www.opengis.net/ont/geosparql#wktLiteral