Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:These results are consistent with a known role for Wnt/b-catenin signaling in regulating the cell cycle and cell fate choices of mouse neural progenitor cells (Chenn and Walsh, 2002), but whether FoxM1 plays a role in this nontumor context is unknown.
Category: