What is a Gerund?
A gerund is a present participle verb form used as a noun.
Southeastern Asia

Tell me about the Korean War.
In 1950, General Douglas MacArthur led United Nations forces to stop communist North Korea from capturing all of South Korea during the Korean War.
Area of a Circle
The area of a circle equals pi(3.14) times the readius squared.
What is the first law of thermodynamics?
The first law of thermodynamics states that energy cannot be created or destroyed.