メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.883269761796 35.2374448120882, 136.880625839077 35.2374606049114, 136.87957529098 35.2374824017165, 136.879563436989 35.2366242580446, 136.879564556378 35.2361322059128, 136.879564574906 35.2361210786674, 136.879550075311 35.2356465243128, 136.880596388846 35.2356325342033, 136.883232215699 35.2356026389206, 136.883248092851 35.2365973505983, 136.883269761796 35.2374448120882)) ^^http://www.opengis.net/ont/geosparql#wktLiteral