Did a Spanish Mexican producer of M7 produce M6 and write M0 , M1 , M2 , and M3
SELECT count(*) WHERE {
?x0 ns:film.producer.film|ns:film.production_company.films M6 .
?x0 ns:film.producer.film|ns:film.production_company.films M7 .
?x0 ns:film.writer.film M0 .
?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.06mkj .
?x0 ns:people.person.nationality ns:m.0b90_r
}