question: Which film was executive produced by a founder and employee of M2 , M3 , and M4 and written by M1
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.film .
  ?x0 ns:film.film.executive_produced_by ?x1 .
  ?x0 ns:film.film.written_by M1 .
  ?x1 ns:organization.organization_founder.organizations_founded M2 .
  ?x1 ns:organization.organization_founder.organizations_founded M3 .
  ?x1 ns:organization.organization_founder.organizations_founded M4 .
  ?x1 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
  ?x1 ns:people.person.employment_history/ns:business.employment_tenure.company M3 .
  ?x1 ns:people.person.employment_history/ns:business.employment_tenure.company M4
  }