question: Was a screenwriter that influenced and was influenced by M2 , M3 , M4 , M5 , and M6 M0
query: SELECT count(*) WHERE {
  M0 a ns:film.writer .
  M0 ns:influence.influence_node.influenced M2 .
  M0 ns:influence.influence_node.influenced M3 .
  M0 ns:influence.influence_node.influenced M4 .
  M0 ns:influence.influence_node.influenced M5 .
  M0 ns:influence.influence_node.influenced M6 .
  M0 ns:influence.influence_node.influenced_by M2 .
  M0 ns:influence.influence_node.influenced_by M3 .
  M0 ns:influence.influence_node.influenced_by M4 .
  M0 ns:influence.influence_node.influenced_by M5 .
  M0 ns:influence.influence_node.influenced_by M6
  }