Was M2 executive produced by a film director , written by a person , and executive produced by M3
SELECT count(*) WHERE {
?x0 a ns:film.director .
?x1 a ns:people.person .
M2 ns:film.film.executive_produced_by ?x0 .
M2 ns:film.film.executive_produced_by M3 .
M2 ns:film.film.written_by ?x1
}