instruction:
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.
question:
A game controller is a device used to play video games .
answer:
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 .

question:
The kilogram is the base unit of mass in the International System of Units ( SI ) .
answer:
The kilogram ( also kilogramme ) is the base unit of mass in the metric system , formally the International System of Units ( SI ) , having the unit symbol kg .

question:
The atoms in molecules , crystals , metals and diatomic gases are held together by chemical bonds .
answer:
The atoms in molecules , crystals , metals and diatomic gases indeed most of the physical environment around us are held together by chemical bonds , which dictate the structure and the bulk properties of matter .