メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.869785861707 38.2591916096496, 140.870494380467 38.2593447005768, 140.870976401687 38.259445769348, 140.870697085102 38.260258589283, 140.870533011059 38.2607443357649, 140.869362351016 38.2605246542951, 140.868259121224 38.2603101518103, 140.868385730465 38.2598292073988, 140.868617621556 38.2589609428616, 140.869785861707 38.2591916096496)) ^^http://www.opengis.net/ont/geosparql#wktLiteral