メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.905168300086 43.4751005633318, 141.90546053096 43.4761229013139, 141.904584311749 43.4762640505116, 141.904345728634 43.4754325906896, 141.904295513119 43.47525170615, 141.904291751857 43.4752381223378, 141.904155253326 43.4747463544497, 141.90400103971 43.4743043232107, 141.90396685293 43.4741789028513, 141.904885853488 43.4740658767735, 141.904901105 43.4741217590389, 141.905168300086 43.4751005633318)) ^^http://www.opengis.net/ont/geosparql#wktLiteral