Complex sentence: He exhibited in the first Negro Art Exhibition and Negro History Week exhibits and opened the first black-owned art gallery in Detroit and was hailed as one of Michigan's foremost modern art painters in 1952.
Split into simpler sentences: He exhibited in the first Negro Art Exhibition and Negro History Week exhibits and opened the first black-owned art gallery in Detroit. Sanford was hailed as one of Michigan's foremost modern art painters in 1952.