Question: when was the 1000 dollar bill discontinued in canada
[{'answer': '2000', 'provenance': [{'wikipedia_id': '1618614', 'title': 'Withdrawn Canadian banknotes', 'start_paragraph_id': 21, 'start_character': 38, 'end_paragraph_id': 21, 'end_character': 42, 'bleu_score': 1.0, 'section': 'Section::::Bank of Canada notes.:$1,000.\n'}]}, {'provenance': [{'wikipedia_id': '1618614', 'title': 'Withdrawn Canadian banknotes', 'start_paragraph_id': 21, 'start_character': 0, 'end_paragraph_id': 21, 'end_character': 514, 'bleu_score': 0.977397480575333, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7742688376475663946}, 'section': 'Section::::Bank of Canada notes.:$1,000.\n'}]}]