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