Were M1 and M6 produced by M4 and M5 , written by M2 and M3 , and edited by a person
SELECT count(*) WHERE {
?x0 a ns:people.person .
M1 ns:film.film.edited_by ?x0 .
M1 ns:film.film.produced_by|ns:film.film.production_companies M4 .
M1 ns:film.film.produced_by|ns:film.film.production_companies M5 .
M1 ns:film.film.written_by M2 .
M1 ns:film.film.written_by M3 .
M6 ns:film.film.edited_by ?x0 .
M6 ns:film.film.produced_by|ns:film.film.production_companies M4 .
M6 ns:film.film.produced_by|ns:film.film.production_companies M5 .
M6 ns:film.film.written_by M2 .
M6 ns:film.film.written_by M3
}