メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.891963580464 43.017600005814, 142.891265175304 43.0171555611493, 142.891475623199 43.0169735677724, 142.892013306759 43.016504626962, 142.892240549755 43.0163021418227, 142.892626435068 43.0165336863617, 142.892921110342 43.0167269180625, 142.892811026066 43.0168408355244, 142.892490992918 43.0171475772092, 142.89233837021 43.0172727042581, 142.891963580464 43.017600005814)) ^^http://www.opengis.net/ont/geosparql#wktLiteral