メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.892529356355 38.1571920044852, 140.891206116978 38.1574591449886, 140.889053062312 38.1578799665682, 140.888200659046 38.1580400028037, 140.887754554097 38.1571890397778, 140.887719726867 38.1571151454469, 140.887237878188 38.1560927251507, 140.886713877325 38.1549444632164, 140.887028384951 38.15498768475, 140.888392367871 38.1549282244794, 140.890253316173 38.1544632061381, 140.890363525657 38.1547455612803, 140.891501255019 38.1544146051894, 140.892529356355 38.1571920044852)) ^^http://www.opengis.net/ont/geosparql#wktLiteral