メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.77948404003 43.2078944239325, 141.779080966459 43.2083131936333, 141.778102617526 43.2092989731991, 141.777885720378 43.2091911805999, 141.77721666567 43.2088432500319, 141.776182983703 43.2083151052523, 141.776586340543 43.2078811577968, 141.776895212182 43.2075806539071, 141.777051014309 43.2074182049584, 141.777107841749 43.2073361552978, 141.777479468495 43.2069444106775, 141.779172901095 43.2077331492851, 141.77948404003 43.2078944239325)) ^^http://www.opengis.net/ont/geosparql#wktLiteral