メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.359237838904 43.110546971646, 141.359128838362 43.1109398041479, 141.358892049822 43.111815116841, 141.358592906476 43.1117715882273, 141.358280710921 43.1117283118309, 141.357630928038 43.1116386774022, 141.357743068233 43.1111496683075, 141.357829386429 43.1107527939558, 141.357927607351 43.1103486196842, 141.358602169564 43.1104496992422, 141.359237838904 43.110546971646)) ^^http://www.opengis.net/ont/geosparql#wktLiteral