Question: the concept of fundamental duties of indian constitution was borrowed from which country
[{'answer': 'Soviet Union', 'provenance': [{'wikipedia_id': '315776', 'title': 'Constitution of India', 'start_paragraph_id': 62, 'start_character': 12, 'end_paragraph_id': 62, 'end_character': 24, 'bleu_score': 1.0, 'section': 'Section::::Influence of other constitutions.\n'}]}]