Did M4 , M5 , M6 , and M7 employ a actor that edited M1 , M2 , and M3
SELECT count(*) WHERE {
?x0 a ns:film.actor .
?x0 ns:film.editor.film M1 .
?x0 ns:film.editor.film M2 .
?x0 ns:film.editor.film M3 .
M4 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M5 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M6 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M7 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
}