Was M2 founded by M0 's editor 's sibling and founded by a film editor
SELECT count(*) WHERE {
?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 ?x1 .
?x1 ns:film.editor.film M0 .
?x2 a ns:film.editor .
FILTER ( ?x0 != ?x1 ) .
M2 ns:organization.organization.founders ?x0 .
M2 ns:organization.organization.founders ?x2
}