メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.382978027084 43.7768563681741, 142.382369962658 43.7770343107463, 142.381553021319 43.7772733686983, 142.381504297566 43.7772876287872, 142.380660913928 43.7775209445628, 142.379894161057 43.7761276186396, 142.38075013297 43.7758667813174, 142.380502354211 43.7754374989438, 142.380519214775 43.7754313618291, 142.38133513168 43.775193490109, 142.381976068442 43.775015426962, 142.382661213996 43.7762841865786, 142.382707316113 43.7763674491543, 142.382978027084 43.7768563681741)) ^^http://www.opengis.net/ont/geosparql#wktLiteral