question: Who influenced M3 's employee , influenced M1 and M2 , and influenced a Canadian screenwriter
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:influence.influence_node.influenced ?x1 .
  ?x0 ns:influence.influence_node.influenced ?x2 .
  ?x0 ns:influence.influence_node.influenced M1 .
  ?x0 ns:influence.influence_node.influenced M2 .
  ?x1 ns:people.person.employment_history/ns:business.employment_tenure.company M3 .
  ?x2 a ns:film.writer .
  ?x2 ns:people.person.nationality ns:m.0d060g
  }