Did a French star of a film play M1 and M2
SELECT count(*) WHERE {
?x0 ns:film.actor.film/ns:film.performance.character M1 .
?x0 ns:film.actor.film/ns:film.performance.character M2 .
?x0 ns:film.actor.film/ns:film.performance.film ?x1 .
?x0 ns:people.person.nationality ns:m.0f8l9c .
?x1 a ns:film.film
}