メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.292204448834 43.0789727765567, 141.292673633479 43.0793962842423, 141.292846790521 43.0795393740832, 141.292870725269 43.0795610955522, 141.293153705072 43.0798172784206, 141.292640020727 43.0801192671451, 141.292578624383 43.0801187537504, 141.292128682575 43.079703846228, 141.291670066711 43.079285629817, 141.290839826195 43.0785382525982, 141.290447382689 43.078184303443, 141.290513061352 43.0781439221021, 141.290985077179 43.0778619188324, 141.292204448834 43.0789727765567)) ^^http://www.opengis.net/ont/geosparql#wktLiteral