Question: when did argentina last won the world cup
[{'answer': '1986', 'provenance': [{'wikipedia_id': '16966712', 'title': 'Argentina at the FIFA World Cup', 'start_paragraph_id': 1, 'start_character': 179, 'end_paragraph_id': 1, 'end_character': 183, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '16966712', 'title': 'Argentina at the FIFA World Cup', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 854, 'bleu_score': 0.9868845362499331, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11026398104941578725}, 'section': 'Section::::Abstract.'}]}]