Were M3 and M4 written by and executive produced by a British director of M1 and M2
SELECT count(*) WHERE {
?x0 ns:film.director.film M1 .
?x0 ns:film.director.film M2 .
?x0 ns:people.person.nationality ns:m.07ssc .
M3 ns:film.film.executive_produced_by ?x0 .
M3 ns:film.film.written_by ?x0 .
M4 ns:film.film.executive_produced_by ?x0 .
M4 ns:film.film.written_by ?x0
}