Question: what is the deepest oceans in the world
[{'answer': 'the western Pacific Ocean', 'provenance': [{'wikipedia_id': '19036', 'title': 'Mariana Trench', 'start_paragraph_id': 1, 'start_character': 52, 'end_paragraph_id': 1, 'end_character': 77, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]