Was a character a film editor that M2 , M3 , and M4 were edited by
SELECT count(*) WHERE {
?x0 a ns:fictional_universe.fictional_character .
?x0 a ns:film.editor .
?x0 ns:film.editor.film M2 .
?x0 ns:film.editor.film M3 .
?x0 ns:film.editor.film M4
}