Did a founder of M2 edit M0 , edit M3 's prequel , and write M1
SELECT count(*) WHERE {
?x0 ns:film.editor.film ?x1 .
?x0 ns:film.editor.film M0 .
?x0 ns:film.writer.film M1 .
?x0 ns:organization.organization_founder.organizations_founded M2 .
?x1 ns:film.film.sequel M3
}