Question: who is the current icc world cup champion
[{'answer': 'Australia', 'provenance': [{'wikipedia_id': '7239', 'title': 'Cricket World Cup', 'start_paragraph_id': 2, 'start_character': 393, 'end_paragraph_id': 2, 'end_character': 402, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]