question: Were M2 and M3 produced by a film producer that M1 's star founded
query: SELECT count(*) WHERE {
  ?x0 a ns:film.producer .
  ?x0 ns:organization.organization.founders ?x1 .
  ?x1 ns:film.actor.film/ns:film.performance.film M1 .
  M2 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
  M3 ns:film.film.produced_by|ns:film.film.production_companies ?x0
  }