Question: state the general molecular formula for a monosaccharide
[{'answer': 'C nH 2n O n'}, {'provenance': [{'wikipedia_id': '19919', 'title': 'Monosaccharide', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 557, 'bleu_score': 0.532219824767594, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15106688794127092545}, 'section': 'Section::::Abstract.'}]}]