Who was the first president of the African country of Ghana after its independence in 1957?

Kwame Nkrumah

What Greek hero was invulnerable except for his heel? What animal is the Looney Tunes character Bugs? In which city is Fenway Park located? What is the job title of Zooey Deschanel's character Jovie in "Elf"? What planet is farthest from the Sun in our solar system?