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

walker process, 382 u.s. at 174.
non-overruling

alvarez-machain'?, cursory analysis contains two errors that lead us to overrule it.
overruling

in keeping with this purpose, the federal circuit expressly overruled the dictum in rca that was informed by the totality of the circumstances test and which suggested that something less than a formal offer for sale could still trigger the on-sale bar.

overruling