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

Example Input: ramirez has shown that reasonable jurists would debate whether the district court erred in dismissing his  2255 motion without prejudice as premature based on a finding that he had a pending direct appeal.
Example Output: non-overruling

Example Input: but to the extent the court of appeal's implication might be read to suggest that the magistrate's failure cannot deny a defendant a substantial right affecting the legality of the commitment even when the failure is prejudicial as well as erroneous, the appellate court's opinion is unsound under the analysis set out above and is hereby disapproved.
Example Output: overruling

Example Input: evans must therefore be overruled.
Example Output:
overruling