Were M3 , M4 , M5 , M6 , and M7 written and edited by a American person that influenced M1
SELECT count(*) WHERE {
?x0 a ns:people.person .
?x0 ns:influence.influence_node.influenced M1 .
?x0 ns:people.person.nationality ns:m.09c7w0 .
M3 ns:film.film.edited_by ?x0 .
M3 ns:film.film.written_by ?x0 .
M4 ns:film.film.edited_by ?x0 .
M4 ns:film.film.written_by ?x0 .
M5 ns:film.film.edited_by ?x0 .
M5 ns:film.film.written_by ?x0 .
M6 ns:film.film.edited_by ?x0 .
M6 ns:film.film.written_by ?x0 .
M7 ns:film.film.edited_by ?x0 .
M7 ns:film.film.written_by ?x0
}