メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.037459709077 42.9122373082795, 143.038212635081 42.9122930450759, 143.038033630457 42.9135443583269, 143.037319027424 42.9135049553654, 143.037316826138 42.9135048300335, 143.036679166745 42.913458705762, 143.036670689577 42.9134579905766, 143.036721065107 42.9130669504642, 143.036725983842 42.9130286560511, 143.03672637732 42.9130256987278, 143.036773430732 42.912662954644, 143.036778614493 42.9126229704374, 143.036834601518 42.912191591084, 143.037459709077 42.9122373082795)) ^^http://www.opengis.net/ont/geosparql#wktLiteral