Was M2 employed by a employer of a Mexican executive producer and director of M0
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x1 ns:film.director.film M0 .
?x1 ns:film.producer.films_executive_produced M0 .
?x1 ns:people.person.nationality ns:m.0b90_r .
M2 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0
}