question: Who influenced M1 and influenced a person 's actor
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:influence.influence_node.influenced ?x1 .
  ?x0 ns:influence.influence_node.influenced M1 .
  ?x1 ns:film.actor.film/ns:film.performance.character ?x2 .
  ?x2 a ns:people.person
  }