Were M3 and M4 edited by a film editor that founded M1 and founded M2
SELECT count(*) WHERE {
?x0 a ns:film.editor .
?x0 ns:organization.organization_founder.organizations_founded M1 .
?x0 ns:organization.organization_founder.organizations_founded M2 .
M3 ns:film.film.edited_by ?x0 .
M4 ns:film.film.edited_by ?x0
}