Complex sentence: Participants in the project included artists such as Armand Vaillancourt, Dumile Feni, Arnoldo Guillien and Carlos Montenegro as well as other anonymous contributors with revolutionary and/or working class backgrounds.
Split into simpler sentences: Participants in the project included artists such as Armand Vaillancourt, Dumile Feni, Arnoldo Guillien and Carlos Montenegro. There were also other, anonymous contributors with revolutionary and/or working class backgrounds.