Question: What is the name of the prequel in the Guardians of Ga'Hoole series, written by Kathryn Lasky, that was published in 2013?
Sentence (from "Kathryn Lasky"): Her children's books include several Dear America books, The Royal Diaries books, "Sugaring Time", "The Night Journey", "Wolves of the Beyond", and the "Guardians of Ga'Hoole" series.
Relevant evidence: Yes