question: Did M0 's employer employ M1 's star and employ a cinematographer
query: SELECT count(*) WHERE {
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x2 .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M0 .
  ?x1 ns:film.actor.film/ns:film.performance.film M1 .
  ?x2 a ns:film.cinematographer
  }