メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.367570491082 43.7272055630702, 142.367436530565 43.7274494126684, 142.367061104293 43.7280925953235, 142.36662005389 43.7288404286915, 142.365370364439 43.7284736185036, 142.365487204724 43.7282662303783, 142.362329912045 43.7273977046734, 142.362180663553 43.7269047285697, 142.362254820539 43.7259132264501, 142.362388736501 43.7255864930249, 142.365346625661 43.7257995682115, 142.365721985542 43.7258265979007, 142.365814392325 43.7258879122446, 142.366078345986 43.7260630769217, 142.367921686398 43.7265933660187, 142.367570491082 43.7272055630702)) ^^http://www.opengis.net/ont/geosparql#wktLiteral