question: Was M3 written by a cinematographer that M1 and M2 were influenced by
query: SELECT count(*) WHERE {
  ?x0 a ns:film.cinematographer .
  ?x0 ns:influence.influence_node.influenced M1 .
  ?x0 ns:influence.influence_node.influenced M2 .
  M3 ns:film.film.written_by ?x0
  }