Were M2 , M4 , M5 , and M6 executive produced by a writer of M0 and M1 and written by M3
SELECT count(*) WHERE {
?x0 ns:film.writer.film M0 .
?x0 ns:film.writer.film M1 .
M2 ns:film.film.executive_produced_by ?x0 .
M2 ns:film.film.written_by M3 .
M4 ns:film.film.executive_produced_by ?x0 .
M4 ns:film.film.written_by M3 .
M5 ns:film.film.executive_produced_by ?x0 .
M5 ns:film.film.written_by M3 .
M6 ns:film.film.executive_produced_by ?x0 .
M6 ns:film.film.written_by M3
}