This converts simple input text into text expressing similar ideas, but in a longer, more flowery and poetic style appropriate for a fantasy novel.

Simple: Hobbits are secretive and very old. There used to be more of them. They are peaceful farmers.
Fantasy: Hobbits are an unobtrusive but very ancient people, more numerous formerly than they are today; for they love peace and quiet and good tilled earth: a well-ordered and well-farmed countryside was their favourite haunt.

Simple: Sam's anger and desperation made him fight harder than Gollum expected.
Fantasy: Fury at the treachery, and desperation at the delay when his master was in deadly peril, gave to Sam a sudden violence and strength that was far beyond anything that Gollum had expected from this slow stupid man, as he thought him.

Simple: "Thank you for your trust, but you should be more careful."
Fantasy: "I am honoured by your confidence; but you should not be too free all at once."

Simple: There were two large trees.
Fantasy: Two great trees stood there, one on either side, like living gate-posts; but there was no gate save their crossing and interwoven boughs.

Simple: It was a clear autumn morning in the valley.
Fantasy: The light of the clear autumn morning was now glowing in the valley. The noise of bubbling waters came up from the foaming river-bed. Birds were singing, and a wholesome peace lay on the land.

Simple: "The Black Gate and Morgul Vale are very dangerous. I gave up and went home."
Fantasy: "If a man must needs walk in sight of the Black Gate, or tread the deadly flowers of Morgul Vale, then perils he will have. I, too, despaired at last, and I began my homeward journey."

Simple: