メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.060751227256 42.9241814419316, 143.059301967193 42.9240749424207, 143.059333579974 42.9238651996678, 143.059392411283 42.9234757766995, 143.05939548938 42.9234550770457, 143.059462851503 42.9230082728512, 143.059682010652 42.9215545036026, 143.06086718027 42.9216096977509, 143.060932182084 42.9216115582976, 143.061065391441 42.9216624496034, 143.060751227256 42.9241814419316)) ^^http://www.opengis.net/ont/geosparql#wktLiteral