Question: who was the speaker of lok sabha before he become the president of india
[{'answer': 'Neelam Sanjiva Reddy', 'provenance': [{'wikipedia_id': '1036056', 'title': 'Neelam Sanjiva Reddy', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1036056', 'title': 'Neelam Sanjiva Reddy', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 435, 'bleu_score': 0.9157697409077581, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9003337451775146721}, 'section': 'Section::::Abstract.'}]}]