Question: How many episodes of the Spanish animated television series, on which "The Gnomes' Great Adventure" was based, were produced?
Sentence (from "The World of David the Gnome"): The World of David the Gnome, originally titled David, el Gnomo (also known as David, the Gnome), is a Spanish animated television series based on the children's book "The Secret Book of Gnomes", by the Dutch author Wil Huygen and illustrator Rien Poortvliet.
Relevant evidence: Yes