Did M4 and M6 influence M5 and influence a American executive producer of M0 , M1 , and M2
SELECT count(*) WHERE {
?x0 ns:film.producer.films_executive_produced M0 .
?x0 ns:film.producer.films_executive_produced M1 .
?x0 ns:film.producer.films_executive_produced M2 .
?x0 ns:people.person.nationality ns:m.09c7w0 .
M4 ns:influence.influence_node.influenced ?x0 .
M4 ns:influence.influence_node.influenced M5 .
M6 ns:influence.influence_node.influenced ?x0 .
M6 ns:influence.influence_node.influenced M5
}