メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.253590804315 43.1337257491292, 141.254108879877 43.1340807707779, 141.254404008471 43.134303815718, 141.25381405348 43.1347324070728, 141.253358712405 43.1350613148674, 141.253328129875 43.1350345350866, 141.252928460024 43.1347442578124, 141.252915837953 43.1347350757031, 141.251793006582 43.1339113159609, 141.251962577453 43.1338001262111, 141.25139970006 43.1334079217245, 141.251675310992 43.1331889281661, 141.251775069138 43.133248873321, 141.252350151 43.1328255083445, 141.25253216406 43.1329529103336, 141.253590804315 43.1337257491292)) ^^http://www.opengis.net/ont/geosparql#wktLiteral