question: Was M1 influenced by M0 's prequel 's editor and influenced by M2
query: SELECT count(*) WHERE {
  ?x0 ns:film.editor.film ?x1 .
  ?x1 ns:film.film.sequel M0 .
  M1 ns:influence.influence_node.influenced_by ?x0 .
  M1 ns:influence.influence_node.influenced_by M2
  }