question: Were M2 , M3 , M4 , and M5 executive produced by a company 's American employee
query: SELECT count(*) WHERE {
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
  ?x0 ns:people.person.nationality ns:m.09c7w0 .
  ?x1 a ns:business.employer .
  M2 ns:film.film.executive_produced_by ?x0 .
  M3 ns:film.film.executive_produced_by ?x0 .
  M4 ns:film.film.executive_produced_by ?x0 .
  M5 ns:film.film.executive_produced_by ?x0
  }