Was M2 executive produced by a producer and writer of M0 and M1 and produced by M3
SELECT count(*) WHERE {
?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.executive_produced_by ?x0 .
M2 ns:film.film.produced_by|ns:film.film.production_companies M3
}