メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.359908932393 43.1372798585462, 141.360521317168 43.1371747013436, 141.360713193917 43.1379116881048, 141.360946523845 43.1387376116604, 141.360308041024 43.1388136617202, 141.359776545614 43.1388892046103, 141.359424377387 43.1389295725934, 141.358851197728 43.1390119598295, 141.358716217315 43.1386310672703, 141.358612360275 43.1382828392353, 141.358491040009 43.1379071875355, 141.358368510618 43.1375488272479, 141.358959045427 43.1374541176506, 141.35983897064 43.1372899335646, 141.359908932393 43.1372798585462)) ^^http://www.opengis.net/ont/geosparql#wktLiteral