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