Which French fashion designer created the "Little black dress"?

Which actress starred opposite Alan Ladd in the film "The Blue Dahlia"?

Of which country was de Valera the prime minister, and later the president?

Which building is the official residence of Queen Elizabeth the Queen Mother?

Whose circus did General Tom Thumb join at the age of five in 1843?

What invention made the fortune of Alfred Noel, founder of the Nobel prize?