メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.842147384368 37.4482710897902, 138.842626163799 37.4484601909452, 138.842751266457 37.4485016439957, 138.842907082356 37.4485300514295, 138.843196771068 37.448537795079, 138.843726651498 37.4485473696866, 138.843685875233 37.4487103882082, 138.843619548308 37.4488710899068, 138.843521372039 37.4490520177161, 138.843429576347 37.4492279978097, 138.843360511938 37.4494905017518, 138.843350020604 37.4496394935433, 138.843340951661 37.4497514535462, 138.843054801656 37.4497803074507, 138.843085155777 37.4495236891269, 138.842861200317 37.4494967457404, 138.842646658273 37.4494571051629, 138.842491970646 37.4494098251932, 138.841811789203 37.4492270815196, 138.84186293158 37.449037141545, 138.841193707834 37.4488356361746, 138.8412060631 37.4487802679728, 138.841257081158 37.448562591301, 138.841289494803 37.4483111777356, 138.841332086086 37.4481235137459, 138.841393033498 37.4479877514632, 138.842147384368 37.4482710897902)) ^^http://www.opengis.net/ont/geosparql#wktLiteral