Question: who is the leader of the elves in lord of the rings
[{'answer': 'Elrond', 'provenance': [{'wikipedia_id': '23139753', 'title': 'Elrond', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 6, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23139753', 'title': 'Elrond', 'start_paragraph_id': 22, 'start_character': 0, 'end_paragraph_id': 22, 'end_character': 503, 'bleu_score': 0.789360289761021, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16059266955879379437}, 'section': 'Section::::Adaptations.\n'}]}]