Question: acral gangrene is a complication of which disease
[{'answer': 'bubonic plague', 'provenance': [{'wikipedia_id': '1761264', 'title': 'Acral necrosis', 'start_paragraph_id': 1, 'start_character': 38, 'end_paragraph_id': 1, 'end_character': 52, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1761264', 'title': 'Acral necrosis', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 395, 'bleu_score': 0.9694566079002921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15797823973286582811}, 'section': 'Section::::Abstract.'}]}]