#sienna  an earth color containing ferric oxides; used as a pigment
  supertype:  earth_color  a colored mineral used as a pigment
  substance of:  burnt_sienna  raw_sienna
  subtype:  burnt_sienna__burntsienna  a reddish-brown pigment produced by roasting sienna
  subtype:  raw_sienna__rawsienna  a yellowish-brown pigment made from untreated sienna

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