Question: which ocean is the biggest ocean in the world
[{'answer': 'Pacific Ocean', 'provenance': [{'wikipedia_id': '18842359', 'title': 'Ocean', 'start_paragraph_id': 29, 'start_character': 69, 'end_paragraph_id': 29, 'end_character': 82, 'bleu_score': 1.0, 'section': "Section::::Earth's global ocean.:Exploration.\n"}]}]