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