Question: the doctrine of specific nerve energies was proposed by
[{'answer': 'Johannes Peter Müller', 'provenance': [{'wikipedia_id': '1719638', 'title': 'Law of specific nerve energies', 'start_paragraph_id': 1, 'start_character': 54, 'end_paragraph_id': 1, 'end_character': 75, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1719638', 'title': 'Law of specific nerve energies', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 650, 'bleu_score': 0.9812185674664711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13736578153931697569}, 'section': 'Section::::Abstract.'}]}]