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