メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.998973397195 34.880705885706, 136.999047845704 34.8809237576236, 136.999320628072 34.8816285720767, 136.999629515989 34.8824921846879, 136.999102887343 34.8822960825978, 136.998764199717 34.8821426393187, 136.998440603046 34.8820126686903, 136.997855550345 34.8821924323591, 136.997285610894 34.8823411558595, 136.997246466644 34.8820274081599, 136.997204685805 34.8816237892972, 136.997121631601 34.8810236845626, 136.997019210702 34.8806325167061, 136.996953974053 34.8804423354433, 136.997359998436 34.8803115544997, 136.997738320575 34.8801910868639, 136.998340612664 34.8800207130866, 136.998636390892 34.8799452717424, 136.998774272091 34.8800839983485, 136.998973397195 34.880705885706)) ^^http://www.opengis.net/ont/geosparql#wktLiteral