Question: what is the most watched tv series in history
[{'answer': 'Seinfeld', 'provenance': [{'wikipedia_id': '39815500', 'title': 'List of most watched television broadcasts in the United States', 'start_paragraph_id': 22, 'start_character': 517, 'end_paragraph_id': 22, 'end_character': 525, 'bleu_score': 1.0, 'section': 'Section::::Most watched television series.:Most watched series finales.\n'}]}]