メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.175593985821 34.8306256213209, 138.175595254228 34.8307169693255, 138.175599223337 34.8307397276739, 138.175648046167 34.8310188916188, 138.175707064071 34.8313563268546, 138.175772555615 34.8318752712892, 138.175799033642 34.8320852859296, 138.175359004456 34.8321439823678, 138.174957169722 34.8321928472385, 138.174805289739 34.8314478116568, 138.174390273131 34.8314995981994, 138.174271906817 34.8308852234024, 138.174281964634 34.8307530570189, 138.174322554664 34.8302191818819, 138.174368273277 34.8302184590064, 138.174368661525 34.8301733159752, 138.174411070382 34.8301724427348, 138.17451341956 34.830170321005, 138.175100339669 34.8301508943546, 138.175597083629 34.830144044555, 138.175592233031 34.8304986349268, 138.175593985821 34.8306256213209)) ^^http://www.opengis.net/ont/geosparql#wktLiteral