メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.313377560734 43.13327845902, 141.313472560653 43.1336603524482, 141.312824366016 43.1339882162751, 141.312805110591 43.1339977643731, 141.312401045018 43.1341977178528, 141.311306869546 43.1330762268748, 141.311270658629 43.1330391477033, 141.311010779883 43.1327589384416, 141.312217896119 43.1320878001702, 141.31225401848 43.1320677699375, 141.312873483068 43.1317525437441, 141.313046773543 43.1319245081306, 141.313113669125 43.1321406163945, 141.313135855835 43.1322409474344, 141.313266004514 43.1328300389229, 141.313377560734 43.13327845902)) ^^http://www.opengis.net/ont/geosparql#wktLiteral