question: Did a American cinematographer of M4 , M5 , and M6 influence M0 and influence M1 and M2
query: SELECT count(*) WHERE {
  ?x0 ns:film.cinematographer.film M4 .
  ?x0 ns:film.cinematographer.film M5 .
  ?x0 ns:film.cinematographer.film M6 .
  ?x0 ns:influence.influence_node.influenced M0 .
  ?x0 ns:influence.influence_node.influenced M1 .
  ?x0 ns:influence.influence_node.influenced M2 .
  ?x0 ns:people.person.nationality ns:m.09c7w0
  }