Question: who presides over the sessions of lok sabha
[{'answer': 'Speaker', 'provenance': [{'wikipedia_id': '275456', 'title': 'Lok Sabha', 'start_paragraph_id': 51, 'start_character': 89, 'end_paragraph_id': 51, 'end_character': 96, 'bleu_score': 1.0, 'section': 'Section::::Procedure.:Procedure in the House.\n'}]}, {'provenance': [{'wikipedia_id': '275456', 'title': 'Lok Sabha', 'start_paragraph_id': 51, 'start_character': 0, 'end_paragraph_id': 51, 'end_character': 376, 'bleu_score': 0.607596075842261, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2922175621592438742}, 'section': 'Section::::Procedure.:Procedure in the House.\n'}]}]