Were M2 , M3 , and M4 directed by a cinematographer 's British child
SELECT count(*) WHERE {
?x0 ns:people.person.nationality ns:m.07ssc .
?x0 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x1 .
?x1 a ns:film.cinematographer .
M2 ns:film.film.directed_by ?x0 .
M3 ns:film.film.directed_by ?x0 .
M4 ns:film.film.directed_by ?x0
}