Question: when was the poem nothing's changed written
[{'answer': '2002', 'provenance': [{'wikipedia_id': '336239', 'title': 'Tatamkhulu Afrika', 'start_paragraph_id': 1, 'start_character': 46, 'end_paragraph_id': 1, 'end_character': 50, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '336239', 'title': 'Tatamkhulu Afrika', 'start_paragraph_id': 19, 'start_character': 0, 'end_paragraph_id': 19, 'end_character': 35, 'bleu_score': 0.5081327481546141, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1500127753105763216}, 'section': 'Section::::Poetry.\n'}]}]