What is the name of the leading female singer in an opera?

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In soccer, how many yellow cards result in a red card?

What is a kookaburra?

Edna St. Vincent Millay is best known for writing what genre of literature?

Jacob and Wilhelm were the first names of what literary brothers?

What river do the Holland Tunnel and Lincoln Tunnel pass beneath?

In the 2004 movie "Anchorman: The Legend of Ron Burgundy', what musical instrument does Ron play?

Which actor was the voice of Charles Muntz in the 2009 movie "Up"?

What TV show character lived at 129 West 81st St, Apt. 5A in New York City?

What year was comedian Jon Stewart born?

What is Dr. Malcolm Crowe’s profession in the film "The Sixth Sense"?

What actress shaved her head for her role in the movie "Star Trek: The Motion Picture"?

What Roman committed suicide in 30 BC after hearing a false report on Cleopatra's death?

What language was the first English-like data processing language?

What war saw the use of tanks in battle for first time?

In mathematics, which prefix refers to 10 to the power of 21?