Question: who sings i'm so sorry uncle albert
[{'answer': 'Paul McCartney', 'provenance': [{'wikipedia_id': '5339931', 'title': 'Uncle Albert/Admiral Halsey', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Reception.\n'}]}, {'answer': 'Linda McCartney', 'provenance': [{'wikipedia_id': '5339931', 'title': 'Uncle Albert/Admiral Halsey', 'start_paragraph_id': 1, 'start_character': 52, 'end_paragraph_id': 1, 'end_character': 67, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]