Were M2 , M3 , and M4 directed by , written by , and executive produced by M0 's American writer
SELECT count(*) WHERE {
?x0 ns:film.writer.film M0 .
?x0 ns:people.person.nationality ns:m.09c7w0 .
M2 ns:film.film.directed_by ?x0 .
M2 ns:film.film.executive_produced_by ?x0 .
M2 ns:film.film.written_by ?x0 .
M3 ns:film.film.directed_by ?x0 .
M3 ns:film.film.executive_produced_by ?x0 .
M3 ns:film.film.written_by ?x0 .
M4 ns:film.film.directed_by ?x0 .
M4 ns:film.film.executive_produced_by ?x0 .
M4 ns:film.film.written_by ?x0
}