Question: who discovered the magnetic effect of electric current
[{'answer': 'Hans Christian Ørsted', 'provenance': [{'wikipedia_id': '7575091', 'title': 'Hans Christian Ørsted', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7575091', 'title': 'Hans Christian Ørsted', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 280, 'bleu_score': 0.505494369531858, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10515506957089242863}, 'section': 'Section::::Abstract.'}]}]