Was M4 a actor whose American sibling wrote M0 and M1 and executive produced M3 's prequel
SELECT count(*) WHERE {
?x0 ns:film.producer.films_executive_produced ?x1 .
?x0 ns:film.writer.film M0 .
?x0 ns:film.writer.film M1 .
?x0 ns:people.person.nationality ns:m.09c7w0 .
?x1 ns:film.film.sequel M3 .
FILTER ( M4 != ?x0 ) .
M4 a ns:film.actor .
M4 ns:people.person.sibling_s/ns:people.sibling_relationship.sibling|ns:fictional_universe.fictional_character.siblings/ns:fictional_universe.sibling_relationship_of_fictional_characters.siblings ?x0
}