question: Who was influenced by a Canadian cinematographer that M3 was influenced by and influenced by M1
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 .
  ?x1 a ns:film.cinematographer .
  ?x1 ns:influence.influence_node.influenced M3 .
  ?x1 ns:people.person.nationality ns:m.0d060g
  }