Question: what is the most liked video on youtube 2017
[{'answer': 'Despacito', 'provenance': [{'wikipedia_id': '50497533', 'title': 'List of most-liked YouTube videos', 'start_paragraph_id': 2, 'start_character': 647, 'end_paragraph_id': 2, 'end_character': 656, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]