Question: who wrote the work ' the post office'
[{'answer': 'Charles Bukowski', 'provenance': [{'wikipedia_id': '2145836', 'title': 'Post Office (novel)', 'start_paragraph_id': 1, 'start_character': 42, 'end_paragraph_id': 1, 'end_character': 58, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2145836', 'title': 'Post Office (novel)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 102, 'bleu_score': 0.8970773746801091, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15280251811128148214}, 'section': 'Section::::Abstract.'}]}]