Was a film editor employed by a company founded by M2 , founded by M3 , and founded by a actor
SELECT count(*) WHERE {
?x0 a ns:film.editor .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x1 a ns:business.employer .
?x1 ns:organization.organization.founders ?x2 .
?x1 ns:organization.organization.founders M2 .
?x1 ns:organization.organization.founders M3 .
?x2 a ns:film.actor
}