メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.617217172501 33.2442530400786, 131.618808688791 33.244411204729, 131.618638574153 33.2449735127414, 131.618480096322 33.2455219223973, 131.617067475752 33.2453826415925, 131.615275834768 33.245207672205, 131.615349451365 33.2446359510502, 131.61543491494 33.2440740871187, 131.617217172501 33.2442530400786)) ^^http://www.opengis.net/ont/geosparql#wktLiteral