Question: when did the beatles stop touring and why
[{'answer': 'August 1966', 'provenance': [{'wikipedia_id': '26327154', 'title': "The Beatles' 1966 US tour", 'start_paragraph_id': 1, 'start_character': 59, 'end_paragraph_id': 1, 'end_character': 70, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': "controversy of John Lennon 's remark about the band being `` more popular than Jesus '' , death threats , and the band 's own dissatisfaction with the noise levels and their ability to perform live ."}, {'provenance': [{'wikipedia_id': '26327154', 'title': "The Beatles' 1966 US tour", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 638, 'bleu_score': 0.7014110227364491, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9578396974165781261}, 'section': 'Section::::Abstract.'}]}]