Question: who is the writer of things fall apart
[{'answer': 'Nigerian author Chinua Achebe', 'provenance': [{'wikipedia_id': '438390', 'title': 'Things Fall Apart', 'start_paragraph_id': 1, 'start_character': 40, 'end_paragraph_id': 1, 'end_character': 69, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '438390', 'title': 'Things Fall Apart', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 650, 'bleu_score': 0.72258161174861, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3703925893387566879}, 'section': 'Section::::Abstract.'}]}]