Did M2 and M6 star M3 and M4 , star a Swedish film editor , and star M5
SELECT count(*) WHERE {
?x0 a ns:film.editor .
?x0 ns:people.person.nationality ns:m.0d0vqn .
M2 ns:film.film.starring/ns:film.performance.actor ?x0 .
M2 ns:film.film.starring/ns:film.performance.actor M3 .
M2 ns:film.film.starring/ns:film.performance.actor M4 .
M2 ns:film.film.starring/ns:film.performance.actor M5 .
M6 ns:film.film.starring/ns:film.performance.actor ?x0 .
M6 ns:film.film.starring/ns:film.performance.actor M3 .
M6 ns:film.film.starring/ns:film.performance.actor M4 .
M6 ns:film.film.starring/ns:film.performance.actor M5
}