メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.182143726935 42.4535318073543, 141.184674927909 42.4549248190233, 141.185474367293 42.4561441462558, 141.185471631081 42.4568441108003, 141.183045645031 42.4562696919074, 141.182430049936 42.4564820021611, 141.182100884661 42.4563389648121, 141.18099535971 42.4558581046396, 141.180029287066 42.4554162365946, 141.179340912595 42.4551014772062, 141.17924098098 42.4550557828073, 141.178690567473 42.4548040383011, 141.177997563692 42.4544869507892, 141.178605292184 42.4538943516678, 141.179253578446 42.4532620355748, 141.179281585358 42.4532307207392, 141.179327068332 42.4531798659253, 141.18010971103 42.4523984204307, 141.180120148531 42.4523878267033, 141.181256768663 42.4530359644091, 141.182143726935 42.4535318073543)) ^^http://www.opengis.net/ont/geosparql#wktLiteral