question: Did a cinematographer influence M1 and M2 and influence a director of M3 and M4
query: SELECT count(*) WHERE {
  ?x0 a ns:film.cinematographer .
  ?x0 ns:influence.influence_node.influenced ?x1 .
  ?x0 ns:influence.influence_node.influenced M1 .
  ?x0 ns:influence.influence_node.influenced M2 .
  ?x1 ns:film.director.film M3 .
  ?x1 ns:film.director.film M4
  }