Did M2 and M4 influence M1 's sibling , influence a art director , and influence M3
SELECT count(*) WHERE {
?x0 a ns:film.film_art_director .
?x1 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 M1 .
FILTER ( ?x1 != M1 ) .
M2 ns:influence.influence_node.influenced ?x0 .
M2 ns:influence.influence_node.influenced ?x1 .
M2 ns:influence.influence_node.influenced M3 .
M4 ns:influence.influence_node.influenced ?x0 .
M4 ns:influence.influence_node.influenced ?x1 .
M4 ns:influence.influence_node.influenced M3
}