question: Which film producer was founded by M1 and employed M2 's director
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.producer .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
  ?x0 ns:organization.organization.founders M1 .
  ?x1 ns:film.director.film M2
  }