instruction:
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.
question:
Category: HISTORIC EUROPEAN LEADERS 
Clue: On June 15, 1961 Walter Ulbricht assured journalists that "No one intends to build a wall" dividing this city
answer:
berlin


question:
Category: RAIDERS 
Clue: John J. Pershing's attempts to stop this Mexican raider included the U.S. cavalry's "last charge"
answer:
pancho villa


question:
Category: LITERARY TERMS 
Clue: It's the 5-syllable adjective for a novel, such as "Clarissa", that's written in the form of letters
answer:

epistolary