Question: who identified the tube connecting the ear and throat
[{'answer': 'Bartolomeo Eustachi', 'provenance': [{'wikipedia_id': '233586', 'title': 'Eustachian tube', 'start_paragraph_id': 1, 'start_character': 300, 'end_paragraph_id': 1, 'end_character': 319, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '233586', 'title': 'Eustachian tube', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 319, 'bleu_score': 0.7047224202473671, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2255679879481446545}, 'section': 'Section::::Abstract.'}]}]