question: Did a French film producer executive produce M1 and M2
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:people.person.nationality ns:m.0f8l9c
  }