Was M2 written by M3 , written by M0 's Canadian sibling , and written by M4 , M5 , and M6
SELECT count(*) WHERE {
?x0 ns:people.person.nationality ns:m.0d060g .
?x0 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 M0 .
FILTER ( ?x0 != M0 ) .
M2 ns:film.film.written_by ?x0 .
M2 ns:film.film.written_by M3 .
M2 ns:film.film.written_by M4 .
M2 ns:film.film.written_by M5 .
M2 ns:film.film.written_by M6
}