メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.871821904889 35.4620581911346, 136.871798239757 35.4617587955305, 136.872283819622 35.461728825276, 136.872337504525 35.4623866099205, 136.872389090265 35.46287435236, 136.871589907962 35.4629139772919, 136.871583726619 35.4630641054914, 136.870646866011 35.4631338823296, 136.870376999015 35.4631499086519, 136.870350642282 35.4628112455746, 136.870329305002 35.4624951304951, 136.870717808925 35.462454289666, 136.870680127614 35.4621347891988, 136.871821904889 35.4620581911346)) ^^http://www.opengis.net/ont/geosparql#wktLiteral