question: Did a writer of M0 influence M1 's male writer
query: SELECT count(*) WHERE {
  ?x0 ns:film.writer.film M0 .
  ?x0 ns:influence.influence_node.influenced ?x1 .
  ?x1 ns:film.writer.film M1 .
  ?x1 ns:people.person.gender ns:m.05zppz
  }