メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.254649699753 35.3693670786565, 137.254224353607 35.3695114579638, 137.253427663427 35.3698137651002, 137.253377924067 35.3691263467524, 137.25331072818 35.3689883672879, 137.253296239416 35.3688283097194, 137.25443166824 35.3686151313507, 137.254721438398 35.3685791541386, 137.254649699753 35.3693670786565)) ^^http://www.opengis.net/ont/geosparql#wktLiteral