From Tar Valon Library
Author: Leora Oldessroth
Bili is the hero in a children's tale called Bili Under the Hill. Elayne is reminded of the story when Moiraine tells her about the red twisted doorframe ter'angreal in the Stone of Tear that one may enter to get three true answers to three questions because Bili's tale has something to do with three answers.
(Reference: The Shadow Rising, Chapter 6)