Complex sentence: The group's name, which in Spanish means "twentieth century", can both be pronounced as Siglo Iks Iks or as Siglo Veinte, stems from an anarchist movement during the Spanish Civil War.
Split into simpler sentences: The group's name in Spanish means "twentieth century". It can both be pronounced as Siglo Iks Iks or as Siglo Veinte and stems from an anarchist movement during the Spanish Civil War.