Was M1 written by M3 , M4 , M5 , and M6 , written by a company , and executive produced by M2
SELECT count(*) WHERE {
?x0 a ns:business.employer .
M1 ns:film.film.executive_produced_by M2 .
M1 ns:film.film.written_by ?x0 .
M1 ns:film.film.written_by M3 .
M1 ns:film.film.written_by M4 .
M1 ns:film.film.written_by M5 .
M1 ns:film.film.written_by M6
}