Were M3 and M4 executive produced by a British actor and executive produced by M2 's cinematographer
SELECT count(*) WHERE {
?x0 a ns:film.actor .
?x0 ns:people.person.nationality ns:m.07ssc .
?x1 ns:film.cinematographer.film M2 .
M3 ns:film.film.executive_produced_by ?x0 .
M3 ns:film.film.executive_produced_by ?x1 .
M4 ns:film.film.executive_produced_by ?x0 .
M4 ns:film.film.executive_produced_by ?x1
}