question: Which actor influenced a actor of M3 and influenced M1 and M2
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.actor .
  ?x0 ns:influence.influence_node.influenced ?x1 .
  ?x0 ns:influence.influence_node.influenced M1 .
  ?x0 ns:influence.influence_node.influenced M2 .
  ?x1 ns:film.actor.film/ns:film.performance.character M3
  }