Question: when did sudan the last white rhino die
[{'answer': '19 March 2018', 'provenance': [{'wikipedia_id': '44628244', 'title': 'Sudan (rhinoceros)', 'start_paragraph_id': 1, 'start_character': 14, 'end_paragraph_id': 1, 'end_character': 27, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '44628244', 'title': 'Sudan (rhinoceros)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 479, 'bleu_score': 0.944475589384524, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8838115826497652796}, 'section': 'Section::::Abstract.'}]}]