question: Which American editor of M2 , M3 , and M4 influenced M0
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.editor.film M2 .
  ?x0 ns:film.editor.film M3 .
  ?x0 ns:film.editor.film M4 .
  ?x0 ns:influence.influence_node.influenced M0 .
  ?x0 ns:people.person.nationality ns:m.09c7w0
  }