Question: how many co2 molecules are produced in aerobic respiration
[{'answer': '6'}, {'provenance': [{'wikipedia_id': '102871', 'title': 'Cellular respiration', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12831644155415719082}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '66723', 'title': 'Respiratory system', 'section': 'Section::::Plants.\n', 'start_paragraph_id': 113, 'end_paragraph_id': 113, 'meta': {'evidence_span': ['6', 'The chemical equation of photosynthesis is 6 CO (carbon dioxide) and 6 HO (water), which in the presence of sunlight makes CHO (glucose) and 6 O (oxygen).']}}]}]