question: Who was influenced by a Canadian actor of M4 , M5 , and M6 , influenced by M1 , and influenced by M2
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:influence.influence_node.influenced_by ?x1 .
  ?x0 ns:influence.influence_node.influenced_by M1 .
  ?x0 ns:influence.influence_node.influenced_by M2 .
  ?x1 ns:film.actor.film/ns:film.performance.character M4 .
  ?x1 ns:film.actor.film/ns:film.performance.character M5 .
  ?x1 ns:film.actor.film/ns:film.performance.character M6 .
  ?x1 ns:people.person.nationality ns:m.0d060g
  }