メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.404696949337 43.7360545937974, 142.40544279509 43.7358220453033, 142.405478939416 43.7361545625908, 142.405506687996 43.7363945849175, 142.405581602694 43.737175452845, 142.404852394828 43.7372214358651, 142.403223934995 43.7373270625821, 142.401532028289 43.7374326250153, 142.40147148137 43.7369325093047, 142.401410994109 43.7364558278386, 142.403119958666 43.7363662959533, 142.403505201066 43.7363280407971, 142.403864343253 43.7362709202857, 142.404244543757 43.7361758678319, 142.404696949337 43.7360545937974)) ^^http://www.opengis.net/ont/geosparql#wktLiteral