question: Was M2 employed by M3 and M4 , employed by M5 , and employed by a male person 's employer
query: SELECT count(*) WHERE {
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
  ?x1 a ns:people.person .
  ?x1 ns:people.person.gender ns:m.05zppz .
  M2 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0 .
  M2 ns:people.person.employment_history/ns:business.employment_tenure.company M3 .
  M2 ns:people.person.employment_history/ns:business.employment_tenure.company M4 .
  M2 ns:people.person.employment_history/ns:business.employment_tenure.company M5
  }