[Question]: Was Alaska part of the Northern Army during the Civil War?

[Answer]: Chain of thought: The Civil War was from 1861 - 1865. The Northern Army consisted of soldiers from states north of the Mason-Dixon line. Alaska did not become part of the United States until 1867. The answer is no.

[Question]: Can a greyhound walk on two legs?

[Answer]: Chain of thought: Greyhounds are dogs. Dogs walk on four legs. The answer is no.

[Question]: Does a person need to be a parent to become a grandparent?

[Answer]: Chain of thought: Parents care for their children. When the children grow up and have kids of their own, the parents become grandparents to those kids. A person who is not a parent has no kids, therefore nobody to produce grandchildren for them. The answer is yes.

[Question]: Is number of stars in Milky Way at least ten times earth's population?

[Answer]:
Chain of thought: The number of stars in the Milky Way galaxy is between 100 and 400 billion. Earth's population in 2018 was 7.5 billion people. The answer is yes.