In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

Seismic waves are divided into two main types of waves , body waves and surface waves .
Among the many types of seismic waves , one can make a broad distinction between " body waves " , which travel through the Earth , and " surface waves " , which travel at the Earth 's surface .

Chuck Norris facts is an Internet phenomenon with joke " facts " about martial artist and actor Chuck Norris .
Chuck Norris facts are satirical factoids about American martial artist and actor Chuck Norris that have become an Internet phenomenon and as a result have become widespread in popular culture .

A winch is a mechanical device that is used to adjust how tight a piece of rope is .

A winch is a mechanical device that is used to pull in ( wind up ) or let out ( wind out ) or otherwise adjust the tension of a rope or wire rope ( also called " cable " or " wire cable " ) .