Was M3 founded by M4 , founded by a cinematographer and editor of M1 and M2 , and founded by a person
SELECT count(*) WHERE {
?x0 a ns:people.person .
?x1 ns:film.cinematographer.film M1 .
?x1 ns:film.cinematographer.film M2 .
?x1 ns:film.editor.film M1 .
?x1 ns:film.editor.film M2 .
M3 ns:organization.organization.founders ?x0 .
M3 ns:organization.organization.founders ?x1 .
M3 ns:organization.organization.founders M4
}