Were M2 and M4 influenced by M3 , influenced by M1 's producer , and influenced by a actor
SELECT count(*) WHERE {
?x0 a ns:film.actor .
?x1 ns:film.producer.film|ns:film.production_company.films M1 .
M2 ns:influence.influence_node.influenced_by ?x0 .
M2 ns:influence.influence_node.influenced_by ?x1 .
M2 ns:influence.influence_node.influenced_by M3 .
M4 ns:influence.influence_node.influenced_by ?x0 .
M4 ns:influence.influence_node.influenced_by ?x1 .
M4 ns:influence.influence_node.influenced_by M3
}