Problem: The flag of Hungary is divided into three bands. Two of the colours are red and white. What is the third?
======
A: green

Q: In 18th/19th century England, mercury was used in the production of felt, which was used in the manufacturing of hats. Some workers in these factories developed dementia because of mercury poisoning. What expression for insanity has this etymological origin?
A: mad as hatter

Problem: What New York hotel gave its name to a salad with apples, celery, walnuts, and mayo?
Answer: waldorf

Q: With which sport are the players Ernests Gulbis and Milos Raonic associated?
-----
A: tennis

Q: Who took over from Gordon Burns on BBC TV's North West Tonight?
What is the answer?

A: roger johnson

question: Answer this question.

Which is the world's deepest lake?
answer:
lake baikal