Complex sentence: He worked as an assistant to Mexican muralist David Alfaro Siqueiros in the early 1930s, and finally ended up in Los Angeles, teaching at art schools such as Otis Art Institute.
Split into simpler sentences: He worked as an assistant to Mexican muralist David Alfaro Siqueiros in the early 1930s. He finally ended up in Los Angeles, teaching at art schools such as Otis Art Institute.