Was M1 founded by a film 's prequel 's director , founded by M2 , and founded by M3
SELECT count(*) WHERE {
?x0 ns:film.director.film ?x1 .
?x1 ns:film.film.sequel ?x2 .
?x2 a ns:film.film .
M1 ns:organization.organization.founders ?x0 .
M1 ns:organization.organization.founders M2 .
M1 ns:organization.organization.founders M3
}