メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.306442170008 43.0965176752754, 141.306101973201 43.0961981823831, 141.305456646261 43.0956322002553, 141.30523740817 43.09543551106, 141.305812069576 43.0950914932937, 141.306333718577 43.0947807934372, 141.306946805106 43.0944146521121, 141.307036936845 43.0944383921757, 141.307168912487 43.0945683210773, 141.308207783629 43.0954862900021, 141.306442170008 43.0965176752754)) ^^http://www.opengis.net/ont/geosparql#wktLiteral