question: Was M3 executive produced by a female person that M1 employed and executive produced by M4 , M5 , and M6
query: SELECT count(*) WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
  ?x0 ns:people.person.gender ns:m.02zsn .
  M3 ns:film.film.executive_produced_by ?x0 .
  M3 ns:film.film.executive_produced_by M4 .
  M3 ns:film.film.executive_produced_by M5 .
  M3 ns:film.film.executive_produced_by M6
  }