Question: who convenes the joint session of the lok sabha and rajya sabha
[{'answer': 'Constitution of India', 'provenance': [{'wikipedia_id': '49973970', 'title': 'Joint Session of the Parliament of India', 'start_paragraph_id': 1, 'start_character': 123, 'end_paragraph_id': 1, 'end_character': 144, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]