Question: who is the author of waiting for the mahatma book
[{'answer': 'R.K. Narayan'}, {'provenance': [{'wikipedia_id': '2661803', 'title': 'Waiting for the Mahatma', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 56, 'bleu_score': 0.6652049901111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17605174980514429115}, 'section': 'Section::::Abstract.'}]}]