question: Were M2 , M3 , M4 , M5 , M6 , and M7 influenced by a screenwriter and influenced by a cinematographer
query: SELECT count(*) WHERE {
  ?x0 a ns:film.cinematographer .
  ?x1 a ns:film.writer .
  M2 ns:influence.influence_node.influenced_by ?x0 .
  M2 ns:influence.influence_node.influenced_by ?x1 .
  M3 ns:influence.influence_node.influenced_by ?x0 .
  M3 ns:influence.influence_node.influenced_by ?x1 .
  M4 ns:influence.influence_node.influenced_by ?x0 .
  M4 ns:influence.influence_node.influenced_by ?x1 .
  M5 ns:influence.influence_node.influenced_by ?x0 .
  M5 ns:influence.influence_node.influenced_by ?x1 .
  M6 ns:influence.influence_node.influenced_by ?x0 .
  M6 ns:influence.influence_node.influenced_by ?x1 .
  M7 ns:influence.influence_node.influenced_by ?x0 .
  M7 ns:influence.influence_node.influenced_by ?x1
  }