Was M1 executive produced by M2 , written by a character , and executive produced by M3 and M4
SELECT count(*) WHERE {
?x0 a ns:fictional_universe.fictional_character .
M1 ns:film.film.executive_produced_by M2 .
M1 ns:film.film.executive_produced_by M3 .
M1 ns:film.film.executive_produced_by M4 .
M1 ns:film.film.written_by ?x0
}