メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.373999650064 43.06975187071, 141.37379205498 43.0707354555146, 141.372685054265 43.0707668547481, 141.372975187957 43.069627139386, 141.373465894819 43.0696853327457, 141.373489726622 43.0696621654156, 141.373499491485 43.0696635769993, 141.373502177451 43.0696500943265, 141.373669106322 43.0694875743983, 141.374008497215 43.0697099514493, 141.373999650064 43.06975187071)) ^^http://www.opengis.net/ont/geosparql#wktLiteral