Input (grade 13): In Norse mythology, the goddess IÃ unn is portrayed in the Prose Edda (written in the 13th century by Snorri Sturluson) as providing apples to the gods that give them eternal youthfulness.
Output (grade 12): In Norse mythology, the goddess IÃ unn gives apples to the gods in Prose Edda (written in the 13th century by Snorri Sturluson) that makes them young forever.