Question: when was the last time clemson was in the sweet 16
[{'answer': '2018', 'provenance': [{'wikipedia_id': '14503740', 'title': "Clemson Tigers men's basketball", 'start_paragraph_id': 2, 'start_character': 308, 'end_paragraph_id': 2, 'end_character': 312, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]