Question: when did the plastic £5 come out
[{'answer': 'September 2016', 'provenance': [{'wikipedia_id': '50344748', 'title': 'Bank of England £5 note', 'start_paragraph_id': 1, 'start_character': 167, 'end_paragraph_id': 1, 'end_character': 181, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '50344748', 'title': 'Bank of England £5 note', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 500, 'bleu_score': 0.978606533029418, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2181826645865337589}, 'section': 'Section::::Abstract.'}]}]