Question: which command is used to clear the screen in linux
[{'answer': 'clear', 'provenance': [{'wikipedia_id': '10286566', 'title': 'Clear (Unix)', 'start_paragraph_id': 1, 'start_character': 25, 'end_paragraph_id': 1, 'end_character': 30, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]