Question: when did the green revolution started in india
[{'answer': '1960s', 'provenance': [{'wikipedia_id': '14101118', 'title': 'Green Revolution in India', 'start_paragraph_id': 2, 'start_character': 57, 'end_paragraph_id': 2, 'end_character': 62, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]