Question: who came up with the doctrine of signatures
[{'answer': 'Paracelsus', 'provenance': [{'wikipedia_id': '480936', 'title': 'Doctrine of signatures', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '480936', 'title': 'Doctrine of signatures', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 202, 'bleu_score': 0.8381098951593451, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3771691476813766775}, 'section': 'Section::::History.\n'}]}]