What character was a film producer that M4 and M5 were executive produced by and M2 and M3 were written by
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:fictional_universe.fictional_character .
?x0 a ns:film.producer .
?x0 ns:film.producer.films_executive_produced M4 .
?x0 ns:film.producer.films_executive_produced M5 .
?x0 ns:film.writer.film M2 .
?x0 ns:film.writer.film M3
}