Were M1 , M4 , M5 , and M6 directed by M3 , executive produced by a actor 's sibling , and produced by M2
SELECT count(*) WHERE {
?x0 ns:people.person.sibling_s/ns:people.sibling_relationship.sibling|ns:fictional_universe.fictional_character.siblings/ns:fictional_universe.sibling_relationship_of_fictional_characters.siblings ?x1 .
?x1 a ns:film.actor .
FILTER ( ?x0 != ?x1 ) .
M1 ns:film.film.directed_by M3 .
M1 ns:film.film.executive_produced_by ?x0 .
M1 ns:film.film.produced_by|ns:film.film.production_companies M2 .
M4 ns:film.film.directed_by M3 .
M4 ns:film.film.executive_produced_by ?x0 .
M4 ns:film.film.produced_by|ns:film.film.production_companies M2 .
M5 ns:film.film.directed_by M3 .
M5 ns:film.film.executive_produced_by ?x0 .
M5 ns:film.film.produced_by|ns:film.film.production_companies M2 .
M6 ns:film.film.directed_by M3 .
M6 ns:film.film.executive_produced_by ?x0 .
M6 ns:film.film.produced_by|ns:film.film.production_companies M2
}