メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.155427310823 35.0711628361519, 137.155192259905 35.0714426094201, 137.154932278484 35.0717397031744, 137.155855385594 35.0722952740245, 137.155674022647 35.0725194883237, 137.154890504539 35.071981188707, 137.154583844799 35.0717905751361, 137.154152914268 35.0715547281931, 137.153819949883 35.07136030469, 137.153905162348 35.0709655066479, 137.154018429108 35.0703739416218, 137.155427310823 35.0711628361519)) ^^http://www.opengis.net/ont/geosparql#wktLiteral