question: Was a male cinematographer of M2 , M3 , and M4 a person
query: SELECT count(*) WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:film.cinematographer.film M2 .
  ?x0 ns:film.cinematographer.film M3 .
  ?x0 ns:film.cinematographer.film M4 .
  ?x0 ns:people.person.gender ns:m.05zppz
  }