Did M2 employ a editor of M0 and employ a executive producer and writer of M1
SELECT count(*) WHERE {
?x0 ns:film.editor.film M0 .
?x1 ns:film.producer.films_executive_produced M1 .
?x1 ns:film.writer.film M1 .
M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x1
}