メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.346242052986 43.0376378395339, 141.34747384366 43.0377188784249, 141.347371722777 43.038400063948, 141.347284849126 43.0390678662305, 141.346819613323 43.0390371876157, 141.346438035661 43.0390095588542, 141.345336993409 43.0389222292718, 141.345365100811 43.038607865034, 141.345405609047 43.038245633893, 141.345412825133 43.0382112996271, 141.345442386726 43.038019883418, 141.345457180088 43.0379265317469, 141.345490723309 43.0375814757765, 141.346242052986 43.0376378395339)) ^^http://www.opengis.net/ont/geosparql#wktLiteral