Complex sentence: Appointed as an Ethnic Art Consultant at the Oakland Museum, Montgomery successfully organized eight exhibitions of established and emerging Black artists, including a 1971 retrospective of African American sculptor Sargent Johnson (1887-1967).
Split into simpler sentences: Appointed as an Ethnic Art Consultant at the Oakland Museum, Montgomery successfully eight exhibitions of both established and emerging Black artists. This included a 1971 retrospective of African American sculptor Sargent Johnson (1887-1967).