メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.682908473747 42.8279904781704, 141.683445996315 42.8281075076638, 141.683604811086 42.8277248355347, 141.684285897924 42.8278740142374, 141.683435399266 42.8298652340364, 141.68280727217 42.8297221523205, 141.682763788964 42.8297122305608, 141.682261737741 42.8296021259029, 141.681424358794 42.8294162887333, 141.680463998308 42.8291893905112, 141.680644328517 42.8287448666373, 141.680801704035 42.8283806905259, 141.680966078522 42.8279979800185, 141.681105002933 42.8276082499904, 141.682893883077 42.8279873106059, 141.682908473747 42.8279904781704)) ^^http://www.opengis.net/ont/geosparql#wktLiteral