Question: Which of the following cases affirmed a defendant's right to have a competency evaluation before trial: Aptheker v. Secretary of State or Dusky v. United States?
{'answer': 'Dusky v. United States', 'supporting_facts': [['Aptheker v. Secretary of State', 0], ['Dusky v. United States', 0], ['Dusky v. United States', 1]]}