Which male German film producer did M1 and M2 influence
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.producer .
?x0 ns:influence.influence_node.influenced_by M1 .
?x0 ns:influence.influence_node.influenced_by M2 .
?x0 ns:people.person.gender ns:m.05zppz .
?x0 ns:people.person.nationality ns:m.0345h
}