Who influenced M1 and M2 , was influenced by M3 , and was influenced by M4 's producer and executive producer
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:people.person .
?x0 ns:influence.influence_node.influenced M1 .
?x0 ns:influence.influence_node.influenced M2 .
?x0 ns:influence.influence_node.influenced_by ?x1 .
?x0 ns:influence.influence_node.influenced_by M3 .
?x1 ns:film.producer.films_executive_produced M4 .
?x1 ns:film.producer.film|ns:film.production_company.films M4
}