You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: THE BIBLE 
Clue: According to the King James Version of the Bible, the number of people on Noah's Ark
8

Category: FAMOUS AMERICANS 
Clue: In 1920 this man, great-grandson of Sauk leader Black Hawk, became the first president of what is now the NFL
jim thorpe

Category: TRANSPORTATION INNOVATIONS 
Clue: This type of program that began in 1981 was inspired by Green Stamps

frequent flyer program