メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.983581693457 43.5538267512059, 144.983248365917 43.5536526024859, 144.98296766986 43.5535134079769, 144.982666763966 43.5525855125392, 144.982718165935 43.552541986515, 144.983102272979 43.5527744457714, 144.98342845249 43.5529830112972, 144.98377928576 43.5526810004149, 144.983921467104 43.5527847271265, 144.984072551399 43.5528843387337, 144.983776812022 43.5531261751356, 144.984126107461 43.5533497948566, 144.984026494719 43.5534346630923, 144.983581693457 43.5538267512059)) ^^http://www.opengis.net/ont/geosparql#wktLiteral