Question: who came up with the theory of social darwinism
[{'answer': 'Herbert Spencer', 'provenance': [{'wikipedia_id': '45541', 'title': 'Social Darwinism', 'start_paragraph_id': 3, 'start_character': 853, 'end_paragraph_id': 3, 'end_character': 868, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '45541', 'title': 'Social Darwinism', 'start_paragraph_id': 16, 'start_character': 0, 'end_paragraph_id': 16, 'end_character': 367, 'bleu_score': 0.9663744727315161, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8431389598586253936}, 'section': 'Section::::Proponents.\n'}]}]