メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.371116038759 43.7388901123214, 142.370930184938 43.7392064581026, 142.370956548957 43.7392166085934, 142.37053611421 43.7399515273612, 142.370435581362 43.7401272434044, 142.369887274792 43.7399578552551, 142.369391446626 43.7398248181972, 142.368714018932 43.7396430256788, 142.369453648921 43.7383894571209, 142.369712609298 43.7379165194923, 142.37113855667 43.7383395070075, 142.371377903651 43.7384105077798, 142.371116038759 43.7388901123214)) ^^http://www.opengis.net/ont/geosparql#wktLiteral