question: Was M0 a film producer that influenced M2 , M3 , and M4 and was influenced by M5 and M6
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_by M5 .
  M0 ns:influence.influence_node.influenced_by M6
  }