Question: when was the first time argentina won the world cup
[{'answer': '1978', 'provenance': [{'wikipedia_id': '16966712', 'title': 'Argentina at the FIFA World Cup', 'start_paragraph_id': 1, 'start_character': 170, 'end_paragraph_id': 1, 'end_character': 174, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]