question: What American actor of M3 and M4 did M0 and M1 influence
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.actor.film/ns:film.performance.character M3 .
  ?x0 ns:film.actor.film/ns:film.performance.character M4 .
  ?x0 ns:influence.influence_node.influenced_by M0 .
  ?x0 ns:influence.influence_node.influenced_by M1 .
  ?x0 ns:people.person.nationality ns:m.09c7w0
  }