メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.441675668483 43.1289312428008, 141.443018814399 43.1290268912081, 141.442969242311 43.1294008291705, 141.442919351202 43.129777016288, 141.442456221859 43.1297546143974, 141.442033675516 43.1297239879678, 141.441574797506 43.129692328696, 141.441101260376 43.1296654869949, 141.440629379891 43.1296296538683, 141.44013482593 43.129594570846, 141.440192065166 43.1292375661736, 141.44025391181 43.1288514076174, 141.441675668483 43.1289312428008)) ^^http://www.opengis.net/ont/geosparql#wktLiteral