メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.751078800504 35.4252436559916, 136.751005189332 35.4252320440467, 136.750953506261 35.4254538333029, 136.750847913191 35.4259043755271, 136.750657207695 35.4258653812687, 136.749880457535 35.425799702717, 136.74994754724 35.4252588907266, 136.749997051633 35.4249507586818, 136.750294877708 35.4250038518561, 136.750345808903 35.4248697710355, 136.75112107143 35.425084084119, 136.751078800504 35.4252436559916)) ^^http://www.opengis.net/ont/geosparql#wktLiteral