メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.244313817117 38.034866436957, 138.244196742032 38.0352992261838, 138.243782318301 38.0352608726366, 138.243400799908 38.0352041470537, 138.242832010007 38.0351646079249, 138.242791828057 38.0351394610775, 138.242798702131 38.0348987390732, 138.24279306722 38.0347866654069, 138.242814962454 38.034557943459, 138.243388246431 38.0346273371784, 138.243378231457 38.0347041834174, 138.244155617857 38.034823013023, 138.244318662935 38.034848568018, 138.244313817117 38.034866436957)) ^^http://www.opengis.net/ont/geosparql#wktLiteral