Did a producer and writer of M0 direct M2 , executive produce M1 , and direct M3
SELECT count(*) WHERE {
?x0 ns:film.director.film M2 .
?x0 ns:film.director.film M3 .
?x0 ns:film.producer.films_executive_produced M1 .
?x0 ns:film.producer.film|ns:film.production_company.films M0 .
?x0 ns:film.writer.film M0
}