Question: who discovered that atoms combine in whole number ratios
[{'answer': 'John Dalton', 'provenance': [{'wikipedia_id': '18339', 'title': 'Law of multiple proportions', 'start_paragraph_id': 1, 'start_character': 291, 'end_paragraph_id': 1, 'end_character': 302, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '18339', 'title': 'Law of multiple proportions', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 442, 'bleu_score': 0.9408228243926111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9335224254365348680}, 'section': 'Section::::Abstract.'}]}]