Question: who knocks on the door at the end of cheers
[{'answer': 'Bob Broder', 'provenance': [{'wikipedia_id': '20584503', 'title': 'One for the Road (Cheers)', 'start_paragraph_id': 11, 'start_character': 1022, 'end_paragraph_id': 11, 'end_character': 1032, 'bleu_score': 1.0, 'section': 'Section::::Synopsis.:Plot.\n'}]}, {'provenance': [{'wikipedia_id': '20584503', 'title': 'One for the Road (Cheers)', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 1216, 'bleu_score': 0.693251574656892, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17227408513704699185}, 'section': 'Section::::Synopsis.:Plot.\n'}]}]