メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.962667437997 43.548248277631, 144.962310149838 43.5480078690962, 144.962044312391 43.5478318806156, 144.961861509873 43.5477051105023, 144.962691523598 43.5470536635547, 144.962918419758 43.5472021670899, 144.963146933183 43.5473694073538, 144.963477643805 43.5475906158832, 144.962667437997 43.548248277631)) ^^http://www.opengis.net/ont/geosparql#wktLiteral