Question: who discovered infrared waves in the electromagnetic spectrum
[{'answer': 'William Herschel', 'provenance': [{'wikipedia_id': '15022', 'title': 'Infrared', 'start_paragraph_id': 2, 'start_character': 60, 'end_paragraph_id': 2, 'end_character': 76, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '15022', 'title': 'Infrared', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 434, 'bleu_score': 0.9624872828631971, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7951560135671162323}, 'section': 'Section::::Abstract.'}]}]