question: Was a person influenced by M1 and M2 , influenced by M3 , and influenced by M4 M5 's editor
query: SELECT count(*) WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:film.editor.film M5 .
  ?x0 ns:influence.influence_node.influenced_by M1 .
  ?x0 ns:influence.influence_node.influenced_by M2 .
  ?x0 ns:influence.influence_node.influenced_by M3 .
  ?x0 ns:influence.influence_node.influenced_by M4
  }