Question: when did paper pound notes go out of circulation
[{'answer': '1988', 'provenance': [{'wikipedia_id': '50389230', 'title': 'Bank of England £1 note', 'start_paragraph_id': 1, 'start_character': 334, 'end_paragraph_id': 1, 'end_character': 338, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '50389230', 'title': 'Bank of England £1 note', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 370, 'bleu_score': 0.972407137066537, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16908905301929393639}, 'section': 'Section::::Abstract.'}]}]