question: Did M6 employ a film editor whose employer was founded by M1 , M2 , M3 , M4 , and M5
query: SELECT count(*) WHERE {
  ?x0 a ns:film.editor .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
  ?x1 ns:organization.organization.founders M1 .
  ?x1 ns:organization.organization.founders M2 .
  ?x1 ns:organization.organization.founders M3 .
  ?x1 ns:organization.organization.founders M4 .
  ?x1 ns:organization.organization.founders M5 .
  M6 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
  }