Question: when was the last time australia won the rugby world cup
[{'answer': '1999', 'provenance': [{'wikipedia_id': '25406', 'title': 'Rugby World Cup', 'start_paragraph_id': 3, 'start_character': 182, 'end_paragraph_id': 3, 'end_character': 186, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]