Question: when was the last time pakistan won the world cup
[{'answer': '1992', 'provenance': [{'wikipedia_id': '12412736', 'title': 'History of the Pakistani cricket team', 'start_paragraph_id': 1, 'start_character': 226, 'end_paragraph_id': 1, 'end_character': 230, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]