メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.760464459153 43.2114467553687, 141.760697481228 43.2115611204834, 141.760360463505 43.2119167374814, 141.760064714827 43.2122455941155, 141.759289892621 43.2131072444056, 141.758788056566 43.2136241161566, 141.757731185016 43.2131027321677, 141.758026038878 43.212797650055, 141.758214536544 43.2126013984915, 141.758623961672 43.2121752094305, 141.759043813341 43.211730917708, 141.75967738624 43.2110603784735, 141.760373711855 43.2114022006079, 141.760464459153 43.2114467553687)) ^^http://www.opengis.net/ont/geosparql#wktLiteral