Question: Dark Girls is a 2012 documentary film by American filmmakers Bill Duke and D. Channsin Berry, it also reports on a new version of the 1940s black doll experiment by who, which were African-American psychologists who as a married team conducted important research among children and were active in the Civil Rights Movement?
{'answer': 'Kenneth and Mamie Clark', 'supporting_facts': [['Dark Girls', 3], ['Kenneth and Mamie Clark', 0]]}