Which screenwriter was influenced by M1 , influenced by M2 , and influenced by a Canadian producer of M4
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.writer .
?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.producer.film|ns:film.production_company.films M4 .
?x1 ns:people.person.nationality ns:m.0d060g
}