Question: The Secret Book of Gnomes is a series of books about Gnomes designed for children, Those authors also created another series about Gnomes entitled what, a Spanish animated television series based on the children's book "The Secret Book of Gnomes", by the Dutch author Wil Huygen?
Sentence (from "The World of David the Gnome"): There was also a spin-off series entitled "Wisdom of the Gnomes".
Relevant evidence: No