Were M2 and M3 produced by a child of a Mexican actor of M1
SELECT count(*) WHERE {
?x0 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x1 .
?x1 ns:film.actor.film/ns:film.performance.character M1 .
?x1 ns:people.person.nationality ns:m.0b90_r .
M2 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
M3 ns:film.film.produced_by|ns:film.film.production_companies ?x0
}