What two occupations do  Alberto Cavalcanti and Oscar Apfel have in common?
Alberto Cavalcanti: Alberto de Almeida Cavalcanti (February 6, 1897 – August 23, 1982) was a Brazilian-born film director and producer. Oscar Apfel: Oscar C. Apfel (January 17, 1878 – March 21, 1938) was an American film actor, director, screenwriter and producer.
film director and producer