The document discusses transformations of sentences related to swimming pools. It provides examples of changing sentences about how someone gets to the gym, the presence of a new swimming pool in town, and when the new pool opened. It then asks the reader to transform the sentence "The old swimming pool wasn't as big as the new one" into a sentence using one, two, or three words. Finally, it lists some key words and their transformations: open, not go, have never been, to go, small, lent me, and spent.
