Question: the biggest reservoir of carbon on earth is in the
[{'answer': 'The ocean', 'provenance': [{'wikipedia_id': '47503', 'title': 'Carbon cycle', 'start_paragraph_id': 10, 'start_character': 129, 'end_paragraph_id': 10, 'end_character': 138, 'bleu_score': 1.0, 'section': 'Section::::Main components.\n'}]}]