メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.962800795687 43.5483374398928, 144.96200873183 43.5489688600221, 144.961491553495 43.5486297555311, 144.960956249397 43.5482787360548, 144.96176163567 43.5476382176934, 144.961861509873 43.5477051105023, 144.962044312391 43.5478318806156, 144.962310149838 43.5480078690962, 144.962667437997 43.548248277631, 144.962800795687 43.5483374398928)) ^^http://www.opengis.net/ont/geosparql#wktLiteral