Task: Explanation
Input (English): Princess Eilonwy, later known as Queen Eilonwy ( ), is a fictional character in Lloyd Alexander's "The Chronicles of Prydain". She appears in four of the five novels in the series, as well as Disney's 1985 animated film adaptation "The Black Cauldron". Eilonwy is a member of the Royal House of Llyr, and the women in her line are formidable enchantresses, including her mother Angharad and grandmother Regat. She has inherited this characteristic, most readily visible in her manipulation of a magical item she calls her "bauble", a small golden sphere that glows with magical light when activated by her willpower. Eilonwy's father, Geraint, was a commoner with whom her mother fell in love. Question: Princess Eilonwy, is a fictional character in Lloyd Alexander's "The Chronicles of Prydain", she also appears  in four of the five novels in the series, as well as Disney's 1985 animated film adaptation of which 1985 American animated dark fantasy adventure film? Answer: The Black Cauldron
Output (English):  She appears in four of the five novels in the series, as well as Disneys 1985 animated film adaptation The Black Cauldron.