Was a male child of a director and cinematographer of M2 and M3 M1 's director
SELECT count(*) WHERE {
?x0 ns:film.director.film M1 .
?x0 ns:people.person.gender ns:m.05zppz .
?x0 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x1 .
?x1 ns:film.cinematographer.film M2 .
?x1 ns:film.cinematographer.film M3 .
?x1 ns:film.director.film M2 .
?x1 ns:film.director.film M3
}