question: Was a cinematographer a actor that influenced M2 , was influenced by M3 , and was influenced by M4 's actor
query: SELECT count(*) WHERE {
  ?x0 a ns:film.actor .
  ?x0 a ns:film.cinematographer .
  ?x0 ns:influence.influence_node.influenced M2 .
  ?x0 ns:influence.influence_node.influenced_by ?x1 .
  ?x0 ns:influence.influence_node.influenced_by M3 .
  ?x1 ns:film.actor.film/ns:film.performance.character M4
  }