メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.058337644546 42.9169786833529, 143.058325929227 42.917048676155, 143.05828708766 42.9173640391953, 143.058282732356 42.9173968454781, 143.058275941904 42.9174483762232, 143.05825007197 42.9176435204808, 143.055791933202 42.9174649546889, 143.055819061623 42.9172702947651, 143.055825100985 42.9172271382544, 143.055869562573 42.9169087831057, 143.055944044998 42.916339059487, 143.058399999866 42.9165003352367, 143.058346168799 42.9169280541263, 143.058337644546 42.9169786833529)) ^^http://www.opengis.net/ont/geosparql#wktLiteral