Question: when did the married man's tax allowance end
[{'answer': 'April 2000', 'provenance': [{'wikipedia_id': '4418111', 'title': 'Personal allowance', 'start_paragraph_id': 7, 'start_character': 398, 'end_paragraph_id': 7, 'end_character': 408, 'bleu_score': 1.0, 'section': "Section::::Married Man's allowance.\n"}]}, {'provenance': [{'wikipedia_id': '4418111', 'title': 'Personal allowance', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 608, 'bleu_score': 0.852304942102984, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17460890688379089304}, 'section': "Section::::Married Man's allowance.\n"}]}]