メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.141777588072 34.6600497099769, 135.141375092281 34.6604512898766, 135.141119675686 34.6602704342404, 135.140965981483 34.660172290628, 135.140502108037 34.6598711159599, 135.140834939502 34.6595280341907, 135.140882874371 34.6594786979058, 135.141188236193 34.6591859425624, 135.14143462756 34.6593419265388, 135.142082904933 34.6597524452992, 135.141777588072 34.6600497099769)) ^^http://www.opengis.net/ont/geosparql#wktLiteral