What was the nationality of Clara Zetkin: Polish, Chinese, British or German?

After the San Francisco earthquake and fire of 1906, architect Julia Morgan was called upon to rebuild the interior of which San Francisco hotel?

Queen Elizabeth's only daughter was born in 1950. What's her name?

What are the first names of thumbs-up movie critics Siskel and Ebert?

Can you name the two sisters who have newspaper columns in hundreds of newspapers throughout the English speaking world?

This African-American botanist and agricultural chemist developed hundreds of uses for peanuts, soybeans, and sweet potatoes. Who was he?

Which game is played on a marked board divided into two halves, each side containing 12 alternately colored points?