Did a film producer that edited M1 and edited M2 executive produce and write M3 and M4
SELECT count(*) WHERE {
?x0 a ns:film.producer .
?x0 ns:film.editor.film M1 .
?x0 ns:film.editor.film M2 .
?x0 ns:film.producer.films_executive_produced M3 .
?x0 ns:film.producer.films_executive_produced M4 .
?x0 ns:film.writer.film M3 .
?x0 ns:film.writer.film M4
}