Question: when was 5 rupee coin introduced in india
[{'answer': '1992', 'provenance': [{'wikipedia_id': '1467510', 'title': 'Coins of the Indian rupee', 'start_paragraph_id': 6, 'start_character': 74, 'end_paragraph_id': 6, 'end_character': 78, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}]