TASK DEFINITION: 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.
PROBLEM: Category: U.S. POLITICS 
Clue: This city has been the site of more major party presidential nominating conventions than any other

SOLUTION: chicago

PROBLEM: Category: PRESIDENTS 
Clue: 2 of the 3 successive presidents who were Republicans, born in Ohio & generals in the Union army

SOLUTION: ulysses s. grant, rutherford b. hayes & james a. garfield

PROBLEM: Category: QUOTATIONS 
Clue: In 1883 he wrote, "Your true pilot cares nothing about anything on Earth but the river"

SOLUTION:
mark twain