In this task, you will be shown a sentence, and you should determine whether it is overruling or non-overruling. In law, an overruling sentence is a statement that nullifies a previous case decision as a precedent by a constitutionally valid statute or a decision by the same or higher ranking court which establishes a different rule on the point of law involved. Classify your answers into overruling or non-overruling
Q: 14 after darby was convicted, he filed a postconviction motion arguing that his constitutional right to self-representation was violated because he had invoked his right during this exchange with the trial court.
A: 
non-overruling