question: Which British actor was influenced by M1 , M2 , M3 , and M4 and influenced by M5 and M6
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.actor .
  ?x0 ns:influence.influence_node.influenced_by M1 .
  ?x0 ns:influence.influence_node.influenced_by 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 .
  ?x0 ns:influence.influence_node.influenced_by M6 .
  ?x0 ns:people.person.nationality ns:m.07ssc
  }