Did a film producer whose spouse directed M2 edit and write M1 's prequel
SELECT count(*) WHERE {
?x0 a ns:film.producer .
?x0 ns:film.editor.film ?x1 .
?x0 ns:film.writer.film ?x1 .
?x0 ns:people.person.spouse_s/ns:people.marriage.spouse|ns:fictional_universe.fictional_character.married_to/ns:fictional_universe.marriage_of_fictional_characters.spouses ?x2 .
?x1 ns:film.film.sequel M1 .
?x2 ns:film.director.film M2 .
FILTER ( ?x0 != ?x2 )
}