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.

Q: A game controller is a device used to play video games .

A: A game controller , or simply controller , is an input device used with video games or entertainment systems to provide input to a video game , typically to control an object or character in the game .
****
Q: Many people call all sparkling wines " champagne " but according to trade laws , only sparkling wine from the Champagne region can be called champagne .

A: Many people use the term " Champagne " as a generic term for sparkling wine but in some countries , it is illegal to label any product " Champagne " unless it both comes from the Champagne region and is produced under the rules of the appellation .
****
Q: A color wheel is a circular chart that shows primary and secondary colors .

A:
A color wheel or color circle is an abstract illustrative organization of color hues around a circle , which shows the relationships between primary colors , secondary colors , tertiary colors etc .
****