Was M2 written by M3 and written by a writer , editor , and producer of M0 and M1
SELECT count(*) WHERE {
?x0 ns:film.editor.film M0 .
?x0 ns:film.editor.film M1 .
?x0 ns:film.producer.film|ns:film.production_company.films M0 .
?x0 ns:film.producer.film|ns:film.production_company.films M1 .
?x0 ns:film.writer.film M0 .
?x0 ns:film.writer.film M1 .
M2 ns:film.film.written_by ?x0 .
M2 ns:film.film.written_by M3
}