Question: who has won the first cricket world cup
[{'answer': 'the West Indies', 'provenance': [{'wikipedia_id': '31384081', 'title': 'List of Cricket World Cup finals', 'start_paragraph_id': 2, 'start_character': 529, 'end_paragraph_id': 2, 'end_character': 544, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]