Did a prequel of a film star M2 's writer and editor and star M0
SELECT count(*) WHERE {
?x0 ns:film.film.sequel ?x1 .
?x0 ns:film.film.starring/ns:film.performance.actor ?x2 .
?x0 ns:film.film.starring/ns:film.performance.actor M0 .
?x1 a ns:film.film .
?x2 ns:film.editor.film M2 .
?x2 ns:film.writer.film M2
}