Question: when did argentina win their first world cup
[{'answer': '1929', 'provenance': [{'wikipedia_id': '37640929', 'title': 'History of the Argentina national football team', 'start_paragraph_id': 21, 'start_character': 3, 'end_paragraph_id': 21, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::History.:1930 World Cup.\n'}]}, {'provenance': [{'wikipedia_id': '37640929', 'title': 'History of the Argentina national football team', 'start_paragraph_id': 21, 'start_character': 0, 'end_paragraph_id': 21, 'end_character': 421, 'bleu_score': 0.887164361871267, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11410539146622238966}, 'section': 'Section::::History.:1930 World Cup.\n'}]}]