Question: when did jimi hendrix cover all along the watchtower
[{'answer': '1968', 'provenance': [{'wikipedia_id': '413556', 'title': 'All Along the Watchtower', 'start_paragraph_id': 2, 'start_character': 312, 'end_paragraph_id': 2, 'end_character': 316, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '413556', 'title': 'All Along the Watchtower', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 397, 'bleu_score': 0.9425437476131631, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9543490847573922131}, 'section': 'Section::::Abstract.'}]}]