Was M3 a Mexican screenwriter whose parent directed M2 , executive produced M0 , and executive produced M1
SELECT count(*) WHERE {
?x0 ns:film.director.film M2 .
?x0 ns:film.producer.films_executive_produced M0 .
?x0 ns:film.producer.films_executive_produced M1 .
M3 a ns:film.writer .
M3 ns:people.person.nationality ns:m.0b90_r .
M3 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x0
}