Question: who discovered the link between electricity and magnetism
[{'answer': 'Hans Christian Ørsted', 'provenance': [{'wikipedia_id': '9532', 'title': 'Electromagnetism', 'start_paragraph_id': 11, 'start_character': 57, 'end_paragraph_id': 11, 'end_character': 78, 'bleu_score': 1.0, 'section': 'Section::::History of the theory.\n'}]}, {'provenance': [{'wikipedia_id': '9532', 'title': 'Electromagnetism', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 508, 'bleu_score': 0.976327165973018, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13981885158361949812}, 'section': 'Section::::History of the theory.\n'}]}]