question: Did a French film producer that M4 employed executive produce M1 , M2 , and M3
query: SELECT count(*) WHERE {
  ?x0 a ns:film.producer .
  ?x0 ns:film.producer.films_executive_produced M1 .
  ?x0 ns:film.producer.films_executive_produced M2 .
  ?x0 ns:film.producer.films_executive_produced M3 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M4 .
  ?x0 ns:people.person.nationality ns:m.0f8l9c
  }