Did a Mexican person direct M5 and M6 and write M1 , M2 , and M3
SELECT count(*) WHERE {
?x0 a ns:people.person .
?x0 ns:film.director.film M5 .
?x0 ns:film.director.film M6 .
?x0 ns:film.writer.film M1 .
?x0 ns:film.writer.film M2 .
?x0 ns:film.writer.film M3 .
?x0 ns:people.person.nationality ns:m.0b90_r
}