メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.811793973713 35.3173688365093, 136.811989863087 35.3178770834076, 136.812169951543 35.3183443272074, 136.811184036019 35.3186029245997, 136.810411562784 35.3187969980117, 136.810035653635 35.3178159396809, 136.810023985955 35.317787172256, 136.809842707179 35.3173403603073, 136.810646974922 35.3171420159665, 136.810760607346 35.3174524984937, 136.811542268432 35.3172510539409, 136.811427670257 35.3169444437403, 136.811626354268 35.316890306508, 136.811793973713 35.3173688365093)) ^^http://www.opengis.net/ont/geosparql#wktLiteral