question: Which editor and producer of M4 was employed by M0 and M1 , was employed by M2 , and founded M3
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.editor.film M4 .
  ?x0 ns:film.producer.film|ns:film.production_company.films M4 .
  ?x0 ns:organization.organization_founder.organizations_founded M3 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M2
  }