question: Were M1 , M4 , M5 , M6 , and M7 influenced by M2 , influenced by a cinematographer , and influenced by M3
query: SELECT count(*) WHERE {
  ?x0 a ns:film.cinematographer .
  M1 ns:influence.influence_node.influenced_by ?x0 .
  M1 ns:influence.influence_node.influenced_by M2 .
  M1 ns:influence.influence_node.influenced_by M3 .
  M4 ns:influence.influence_node.influenced_by ?x0 .
  M4 ns:influence.influence_node.influenced_by M2 .
  M4 ns:influence.influence_node.influenced_by M3 .
  M5 ns:influence.influence_node.influenced_by ?x0 .
  M5 ns:influence.influence_node.influenced_by M2 .
  M5 ns:influence.influence_node.influenced_by M3 .
  M6 ns:influence.influence_node.influenced_by ?x0 .
  M6 ns:influence.influence_node.influenced_by M2 .
  M6 ns:influence.influence_node.influenced_by M3 .
  M7 ns:influence.influence_node.influenced_by ?x0 .
  M7 ns:influence.influence_node.influenced_by M2 .
  M7 ns:influence.influence_node.influenced_by M3
  }