@RequestMapping(
     value = "/events/{eventId}/speakers/{speakerId}/speeches",
     method = GET,
     produces = MediaType.APPLICATION_JSON_VALUE)
 public Set<Speech> findByEventAndSpeaker(
     @PathVariable("speakerId") Long speakerId, @PathVariable("eventId") Long eventId) {
   Event event = eventService.findById(eventId);
   Speaker speaker = speakerService.findById(speakerId);
   return speechService.findByEventAndSpeaker(event, speaker);
 }