メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.283613360072 37.3677598854523, 140.282712356188 37.3677271283881, 140.282694667729 37.3676597526336, 140.282527637832 37.36698243944, 140.282421377728 37.3665491817606, 140.283675987353 37.3665866509966, 140.283629489398 37.3674847032102, 140.283613360072 37.3677598854523)) ^^http://www.opengis.net/ont/geosparql#wktLiteral