メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.86292529414 43.33393010803, 141.863074901722 43.3344807176969, 141.862349454573 43.3345866457919, 141.861829381607 43.334664147102, 141.861687556001 43.3340473137182, 141.861676537033 43.3340114791746, 141.861513634799 43.3334817808216, 141.862713150134 43.3332981990722, 141.862742737062 43.3333684161973, 141.86292529414 43.33393010803)) ^^http://www.opengis.net/ont/geosparql#wktLiteral