メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.560434012542 40.2687234242221, 140.561511633417 40.2689467218197, 140.561489171903 40.2690738346946, 140.561497361015 40.2693810085186, 140.561658669658 40.2698108883843, 140.560291415095 40.26987726597, 140.55864985537 40.269941781429, 140.558543500593 40.2691016828794, 140.558518086673 40.268798090332, 140.558488095811 40.268519238776, 140.558483174519 40.2684131188705, 140.558521619105 40.2683097911569, 140.560434012542 40.2687234242221)) ^^http://www.opengis.net/ont/geosparql#wktLiteral