Question: who developed a scheme of classification known as the ladder of life
[{'answer': 'Taxonomy', 'provenance': [{'wikipedia_id': '30463', 'title': 'Taxonomy (biology)', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 8, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '30463', 'title': 'Taxonomy (biology)', 'start_paragraph_id': 31, 'start_character': 0, 'end_paragraph_id': 31, 'end_character': 834, 'bleu_score': 0.9843125095516201, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11143018925072161170}, 'section': 'Section::::History.:Pre-Linnaean.:Medieval.\n'}]}]