Was M4 executive produced by and directed by a British film producer whose sibling executive produced M2 and M3
SELECT count(*) WHERE {
?x0 a ns:film.producer .
?x0 ns:people.person.nationality ns:m.07ssc .
?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 ns:film.producer.films_executive_produced M2 .
?x1 ns:film.producer.films_executive_produced M3 .
FILTER ( ?x0 != ?x1 ) .
M4 ns:film.film.directed_by ?x0 .
M4 ns:film.film.executive_produced_by ?x0
}