Was a company founded by M1 and founded by M2 's writer and editor
SELECT count(*) WHERE {
?x0 a ns:business.employer .
?x0 ns:organization.organization.founders ?x1 .
?x0 ns:organization.organization.founders M1 .
?x1 ns:film.editor.film M2 .
?x1 ns:film.writer.film M2
}