メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.960207432893 43.5477541017419, 144.960025922172 43.5476302169836, 144.959755894238 43.5474554116517, 144.959441606832 43.5472422077247, 144.959426438055 43.547231667552, 144.959357989237 43.5471842079372, 144.960124167992 43.5465574632698, 144.960582717534 43.5468617172844, 144.960998228946 43.5471245170523, 144.960207432893 43.5477541017419)) ^^http://www.opengis.net/ont/geosparql#wktLiteral