メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.384989215155 44.1746981227749, 142.384661337559 44.17464583953, 142.381022907565 44.1740655706532, 142.37997367455 44.173897596095, 142.379231706561 44.1737788060278, 142.379499418829 44.17290845829, 142.382044298958 44.173310378201, 142.382902389511 44.1736710818769, 142.383257020383 44.173621028036, 142.383513140421 44.1735852723813, 142.383680641423 44.1735779943476, 142.383966296537 44.1735280186602, 142.384034698808 44.1734588346122, 142.385310649807 44.1736717536034, 142.384989215155 44.1746981227749)) ^^http://www.opengis.net/ont/geosparql#wktLiteral