Answer: 1000 grams
A kilogram is equal to 1000 grams.

Answer: John F. Kennedy
John F. Kennedy was the fourth President of the United States to have been assassinated while in office.

Answer: Gotham City
Batman lives and works in Gotham City.

Answer: Oak
The acorn is actually the fruit of the Oak tree and they begin showing up after the tree is 20 years old.

Answer: Cow
A female elephant is a cow. Female elephants tend to be smaller than their male counterparts.

Answer: New York City
Located in Lower Manhattan, New York City, Wall Street is considered America's financial center.

Answer: Kid
Kid is the name given to baby goats.

Answer: U.S.A.
In 2004, Mark Zuckerberg, Chris Hughes, Andrew McCollum, Eduardo Saverin and Dustin Moskovitz founded the famous social networking site Facebook in Cambridge, Massachusetts, United States.

Answer: Germany
Adolf Hitler was a dictator who ruled as Chancellor of Germany from 1933 to 1945.

Answer: 1000
A millennium is a period of a thousand years. It got its name from the word "mille", which is Latin for one thousand.