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