Were M3 and M4 founded by a film editor and founded by a American film director
SELECT count(*) WHERE {
?x0 a ns:film.editor .
?x1 a ns:film.director .
?x1 ns:people.person.nationality ns:m.09c7w0 .
M3 ns:organization.organization.founders ?x0 .
M3 ns:organization.organization.founders ?x1 .
M4 ns:organization.organization.founders ?x0 .
M4 ns:organization.organization.founders ?x1
}