メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.17995209632 34.781340790628, 137.180293582935 34.7816111941123, 137.180375550088 34.7817238685938, 137.180457540966 34.7819604948587, 137.180293663495 34.7820393914858, 137.180102466217 34.782084485824, 137.179801996467 34.7820957864668, 137.179528850504 34.7821296202508, 137.179446869856 34.7819380666485, 137.179378551223 34.7817690482821, 137.179556088674 34.7817014198026, 137.179706200729 34.78158252294, 137.17995209632 34.781340790628)) ^^http://www.opengis.net/ont/geosparql#wktLiteral