question: Was a film producer influenced by M1 , influenced by M2 , and influenced by a editor and star of M3 and M4
query: SELECT count(*) WHERE {
  ?x0 a ns:film.producer .
  ?x0 ns:influence.influence_node.influenced_by ?x1 .
  ?x0 ns:influence.influence_node.influenced_by M1 .
  ?x0 ns:influence.influence_node.influenced_by M2 .
  ?x1 ns:film.actor.film/ns:film.performance.film M3 .
  ?x1 ns:film.actor.film/ns:film.performance.film M4 .
  ?x1 ns:film.editor.film M3 .
  ?x1 ns:film.editor.film M4
  }