Question: which state of india population decreased in 2011
[{'answer': 'Andhra Pradesh'}, {'answer': 'Nagaland', 'provenance': [{'wikipedia_id': '31430266', 'title': 'List of states in India by past population', 'start_paragraph_id': 4, 'start_character': 393, 'end_paragraph_id': 4, 'end_character': 401, 'bleu_score': 1.0, 'section': 'Section::::Census of India.\n'}]}]