Question: who discovered that cells originate from division of existing cells
[{'answer': 'Robert Remak', 'provenance': [{'wikipedia_id': '102858', 'title': 'Cell theory', 'start_paragraph_id': 21, 'start_character': 94, 'end_paragraph_id': 21, 'end_character': 106, 'bleu_score': 1.0, 'section': 'Section::::Cell theory.\n'}]}, {'provenance': [{'wikipedia_id': '102858', 'title': 'Cell theory', 'start_paragraph_id': 23, 'start_character': 0, 'end_paragraph_id': 23, 'end_character': 517, 'bleu_score': 0.9451526628827591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3821532805651009946}, 'section': 'Section::::Cell theory.\n'}]}]