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"): Kathryn Lasky (born June 24, 1944) is an American children's writer who also writes for adults under the names Kathryn Lasky Knight and E. L. Swann.
Relevant evidence: Yes