Complex sentence: His artistic friends included Orozco, David Alfaro Siqueiros and Diego Rivera, and after a short but intense stay in Cuba, Colson developed a close friendship with the Cuban painter Mario Carreño Morales.
Split into simpler sentences: His artistic friends included Orozco, David Alfaro Siqueiros and Diego Rivera. After a short but intense stay in Cuba, Colson developed a close friendship with the Cuban painter Mario Carreño Morales.