メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.953646695455 37.8045778211444, 140.950811711146 37.80429233596, 140.949310394672 37.8041588796325, 140.94864373589 37.8040909972125, 140.948481813163 37.804072116073, 140.948380207273 37.8040468922772, 140.948410590596 37.8032354180852, 140.953701491109 37.8033541835715, 140.953646695455 37.8045778211444)) ^^http://www.opengis.net/ont/geosparql#wktLiteral