Question: who is the winner of 2015 world cup
[{'answer': 'Australia', 'provenance': [{'wikipedia_id': '31374270', 'title': '2015 Cricket World Cup Final', 'start_paragraph_id': 1, 'start_character': 114, 'end_paragraph_id': 1, 'end_character': 123, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '31374270', 'title': '2015 Cricket World Cup Final', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 400, 'bleu_score': 0.937535115907385, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1812276407636552145}, 'section': 'Section::::Abstract.'}]}]