question: Was a cinematographer employed by M2 , employed by M3 , and employed by M4 , M5 , and M6 M0
query: SELECT count(*) WHERE {
  M0 a ns:film.cinematographer .
  M0 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
  M0 ns:people.person.employment_history/ns:business.employment_tenure.company M3 .
  M0 ns:people.person.employment_history/ns:business.employment_tenure.company M4 .
  M0 ns:people.person.employment_history/ns:business.employment_tenure.company M5 .
  M0 ns:people.person.employment_history/ns:business.employment_tenure.company M6
  }