Question: Finn (also known as Finn the Human and born as Finn Mertens) is a fictional character and the main protagonist of which American animated television series on the Cartoon Network, and an animated short created by Pendleton Ward? 
Sentence (from "Adventure Time (season 1)"): The season follows the adventures of Finn, a human boy, and his best friend and adoptive brother Jake, a dog with magical powers to change shape and size at will.
Relevant evidence: No