メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.681062918795 34.8332289052066, 134.680363369727 34.8334565624131, 134.679897408806 34.8325416225907, 134.68007530531 34.8324909689119, 134.681355363618 34.832086704258, 134.681793071532 34.832987634543, 134.681062918795 34.8332289052066)) ^^http://www.opengis.net/ont/geosparql#wktLiteral