メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.247254480541 38.0349727702729, 138.24665514015 38.034972038354, 138.246664984231 38.0348922360653, 138.246628732088 38.0348490788995, 138.246254932945 38.0347929432858, 138.24619560877 38.034820266645, 138.246186369835 38.0348669871245, 138.245875785924 38.0348287243353, 138.24593007168 38.0344704118325, 138.245841467695 38.034401799334, 138.245734075789 38.0343294861483, 138.245656196808 38.0342797619996, 138.245764045103 38.0338169645893, 138.247266462205 38.0347243153718, 138.247254480541 38.0349727702729)) ^^http://www.opengis.net/ont/geosparql#wktLiteral