Question: in which year zimbabwe attained independence from the white minority
[{'answer': '1980', 'provenance': [{'wikipedia_id': '14114', 'title': 'History of Zimbabwe', 'start_paragraph_id': 1, 'start_character': 118, 'end_paragraph_id': 1, 'end_character': 122, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '14114', 'title': 'History of Zimbabwe', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 682, 'bleu_score': 0.588622574149249, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5379827724116130733}, 'section': 'Section::::Abstract.'}]}]