question: Who founded a production company , founded M4 's distributor , was employed by M1 , and was employed by M2
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:organization.organization_founder.organizations_founded ?x1 .
  ?x0 ns:organization.organization_founder.organizations_founded ?x2 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
  ?x1 a ns:film.production_company .
  ?x2 ns:film.film_distributor.films_distributed/ns:film.film_film_distributor_relationship.film M4
  }