Task: Text Categorization
Input (English): One of this author's novels centers on a paladin of Charlemagne called Agilulf. Biagio narrates another one of his novels, in which Viola embarks on a love affair with Cosimo Piovasco after he flees into the forest. This author of The Nonexistent Knight and The Baron in the Trees wrote about the orphan Pin in The Path to the Nest of Spiders. Marco Polo silently describes 55 imaginary locales to Kublai Khan in this writer's Invisible Cities. Ermes Marana deliberately threads together partial translations of novels, much to the frustration of two readers of one of his novels, Ludmilla and you. For 10 points, name this Italian author of If on a winter's night a traveler.
Output (English): Literature