question: Were M2 and M4 founded by M1 's employee , founded by M3 , and founded by a actor
query: SELECT count(*) WHERE {
  ?x0 a ns:film.actor .
  ?x1 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
  M2 ns:organization.organization.founders ?x0 .
  M2 ns:organization.organization.founders ?x1 .
  M2 ns:organization.organization.founders M3 .
  M4 ns:organization.organization.founders ?x0 .
  M4 ns:organization.organization.founders ?x1 .
  M4 ns:organization.organization.founders M3
  }