メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.91016193027 43.5139664044457, 141.90987789747 43.5144062592558, 141.909486851419 43.5142848376411, 141.909260786763 43.5142084235492, 141.909132727529 43.5141278344275, 141.909090452886 43.5140252431075, 141.909140149557 43.5138962014703, 141.90929325934 43.5136778724887, 141.909587518272 43.5132582683324, 141.909661682954 43.5131337651799, 141.909693318441 43.5130628300313, 141.910153933229 43.5132176531254, 141.910554064006 43.5133591764129, 141.91016193027 43.5139664044457)) ^^http://www.opengis.net/ont/geosparql#wktLiteral