Was M2 executive produced by M0 's Mexican employee , written by M3 , and written by M4
SELECT count(*) WHERE {
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
?x0 ns:people.person.nationality ns:m.0b90_r .
M2 ns:film.film.executive_produced_by ?x0 .
M2 ns:film.film.written_by M3 .
M2 ns:film.film.written_by M4
}