メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.165292792534 34.2316621276677, 135.164660258426 34.2316560071406, 135.163399493431 34.2316547728838, 135.16337116322 34.2313538252259, 135.164636443284 34.2313439618653, 135.165278000362 34.2313463396942, 135.166337672504 34.2313423891643, 135.166330156161 34.2316505606109, 135.165292792534 34.2316621276677)) ^^http://www.opengis.net/ont/geosparql#wktLiteral