Was M2 directed by M3 , directed by M4 , and executive produced by a writer of M0 and M1
SELECT count(*) WHERE {
?x0 ns:film.writer.film M0 .
?x0 ns:film.writer.film M1 .
M2 ns:film.film.directed_by M3 .
M2 ns:film.film.directed_by M4 .
M2 ns:film.film.executive_produced_by ?x0
}