Did M7 star a French person that directed M2 , M3 , M4 , and M5 and directed M6
SELECT count(*) WHERE {
?x0 a ns:people.person .
?x0 ns:film.director.film M2 .
?x0 ns:film.director.film M3 .
?x0 ns:film.director.film M4 .
?x0 ns:film.director.film M5 .
?x0 ns:film.director.film M6 .
?x0 ns:people.person.nationality ns:m.0f8l9c .
M7 ns:film.film.starring/ns:film.performance.actor ?x0
}