Question: who did the cleveland browns beat last year
[{'answer': 'San Diego Chargers', 'provenance': [{'wikipedia_id': '48434361', 'title': '2016 Cleveland Browns season', 'start_paragraph_id': 63, 'start_character': 24, 'end_paragraph_id': 63, 'end_character': 42, 'bleu_score': 1.0, 'section': 'Section::::Regular season.:Game summaries.:Week 15: at Buffalo Bills.\n'}]}]