Were M4 and M5 founded by a editor of M0 , M1 , and M2 and founded by M3 's founder and employee
SELECT count(*) WHERE {
?x0 ns:film.editor.film M0 .
?x0 ns:film.editor.film M1 .
?x0 ns:film.editor.film M2 .
?x1 ns:organization.organization_founder.organizations_founded M3 .
?x1 ns:people.person.employment_history/ns:business.employment_tenure.company M3 .
M4 ns:organization.organization.founders ?x0 .
M4 ns:organization.organization.founders ?x1 .
M5 ns:organization.organization.founders ?x0 .
M5 ns:organization.organization.founders ?x1
}