question: Did M2 employ a screenwriter , employ M3 and M4 , and employ M1 's founder
query: SELECT count(*) WHERE {
  ?x0 a ns:film.writer .
  ?x1 ns:organization.organization_founder.organizations_founded M1 .
  M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
  M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
  M2 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
  M2 ns:business.employer.employees/ns:business.employment_tenure.person M4
  }