Was M1 executive produced by a cinematographer of a film 's prequel and sequel
SELECT count(*) WHERE {
?x0 ns:film.cinematographer.film ?x1 .
?x1 ns:film.film.prequel ?x2 .
?x1 ns:film.film.sequel ?x2 .
?x2 a ns:film.film .
M1 ns:film.film.executive_produced_by ?x0
}