メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.305112081807 43.0972504768055, 141.305456598999 43.097058743659, 141.306452126365 43.0979567483678, 141.306762429487 43.0982487776827, 141.30702411511 43.0984883621552, 141.306208322015 43.0989588184595, 141.305753651707 43.0992242162209, 141.305014032325 43.0996579485336, 141.304590309987 43.0995142859764, 141.304069669526 43.0993386650187, 141.303735670361 43.0992396956454, 141.302913657295 43.0984613949374, 141.303966157788 43.0978860952094, 141.304178850017 43.0977698346138, 141.305112081807 43.0972504768055)) ^^http://www.opengis.net/ont/geosparql#wktLiteral