Were M2 and M4 written by M1 's Mexican spouse 's parent and directed by M3
SELECT count(*) WHERE {
?x0 ns:people.person.children|ns:fictional_universe.fictional_character.children|ns:organization.organization.child/ns:organization.organization_relationship.child ?x1 .
?x1 ns:people.person.nationality ns:m.0b90_r .
?x1 ns:people.person.spouse_s/ns:people.marriage.spouse|ns:fictional_universe.fictional_character.married_to/ns:fictional_universe.marriage_of_fictional_characters.spouses M1 .
FILTER ( ?x1 != M1 ) .
M2 ns:film.film.directed_by M3 .
M2 ns:film.film.written_by ?x0 .
M4 ns:film.film.directed_by M3 .
M4 ns:film.film.written_by ?x0
}