Question: when did the guinea go out of circulation
[{'answer': '1814', 'provenance': [{'wikipedia_id': '225453', 'title': 'Guinea (coin)', 'start_paragraph_id': 1, 'start_character': 115, 'end_paragraph_id': 1, 'end_character': 119, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '225453', 'title': 'Guinea (coin)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 555, 'bleu_score': 0.980097014099621, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6897092949834767414}, 'section': 'Section::::Abstract.'}]}]