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: 725 f.3d at 1207 (citing to 40 c.f.r.  122.26(d)(2)(i)(f) (regarding municipal storm water discharges)).
Example Output: non-overruling

Example Input: i. dish's appeal
Example Output: non-overruling

Example Input: because this understanding is inconsistent with the approach of nutall, we have circulated this opinion to all active judges under circuit rule 40(e).
Example Output:
overruling