question: Was a director of M2 a cinematographer that was influenced by a Mexican film editor and was influenced by M1
query: SELECT count(*) WHERE {
  ?x0 a ns:film.cinematographer .
  ?x0 ns:film.director.film M2 .
  ?x0 ns:influence.influence_node.influenced_by ?x1 .
  ?x0 ns:influence.influence_node.influenced_by M1 .
  ?x1 a ns:film.editor .
  ?x1 ns:people.person.nationality ns:m.0b90_r
  }