question: Was M4 influenced by M5 and M6 and influenced by a male Mexican film editor that wrote M1
query: SELECT count(*) WHERE {
  ?x0 a ns:film.editor .
  ?x0 ns:film.writer.film M1 .
  ?x0 ns:people.person.gender ns:m.05zppz .
  ?x0 ns:people.person.nationality ns:m.0b90_r .
  M4 ns:influence.influence_node.influenced_by ?x0 .
  M4 ns:influence.influence_node.influenced_by M5 .
  M4 ns:influence.influence_node.influenced_by M6
  }