Question: who is credited with discovering how to transmit sound without the use of wires
[{'answer': 'Amos Dolbear', 'provenance': [{'wikipedia_id': '33131', 'title': 'Wireless telegraphy', 'start_paragraph_id': 15, 'start_character': 496, 'end_paragraph_id': 15, 'end_character': 508, 'bleu_score': 1.0, 'section': 'Section::::Nonradio methods.:Ground, water, and air conduction.\n'}]}, {'provenance': [{'wikipedia_id': '33131', 'title': 'Wireless telegraphy', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 621, 'bleu_score': 0.9788329837059241, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 145186512338105971}, 'section': 'Section::::Nonradio methods.:Ground, water, and air conduction.\n'}]}]