question: Did a actor influenced by M7 influence M1 , M2 , M3 , M4 , M5 , and M6
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 M3 .
  ?x0 ns:influence.influence_node.influenced M4 .
  ?x0 ns:influence.influence_node.influenced M5 .
  ?x0 ns:influence.influence_node.influenced M6 .
  ?x0 ns:influence.influence_node.influenced_by M7
  }