Question: when did uruguay last win the world cup
[{'answer': '1950', 'provenance': [{'wikipedia_id': '27743400', 'title': 'Uruguay at the FIFA World Cup', 'start_paragraph_id': 2, 'start_character': 407, 'end_paragraph_id': 2, 'end_character': 411, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]