question: Which film director whose employer employed M2 was M1 's founder and employee
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.director .
  ?x0 ns:organization.organization_founder.organizations_founded M1 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
  ?x1 ns:business.employer.employees/ns:business.employment_tenure.person M2
  }