What character that M2 was influenced by was a French writer of M1
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:fictional_universe.fictional_character .
?x0 ns:film.writer.film M1 .
?x0 ns:influence.influence_node.influenced M2 .
?x0 ns:people.person.nationality ns:m.0f8l9c
}