Question: when did india conduct its first nuclear test
[{'answer': 'May 1974', 'provenance': [{'wikipedia_id': '2188274', 'title': 'Pokhran-II', 'start_paragraph_id': 1, 'start_character': 272, 'end_paragraph_id': 1, 'end_character': 280, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2188274', 'title': 'Pokhran-II', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 280, 'bleu_score': 0.9603762111511761, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10042598994576210662}, 'section': 'Section::::Abstract.'}]}]