Question: who came up with the plum pudding model
[{'answer': 'J.J. Thomson'}, {'provenance': [{'wikipedia_id': '2840', 'title': 'Plum pudding model', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 371, 'bleu_score': 0.6061091364969511, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16530637578352640177}, 'section': 'Section::::Abstract.'}]}]