Instruction: Evaluate the relevance of each product title in the input to the given query, and then sort the products in descending order of relevance, placing the most relevant product at the top of the ranked list.

Input:
Query: a nation without borders
Product list:
A: Badges without Borders (American Crossroads) (Volume 56)
B: Nations without borders.(from the editor)(Editorial): An article from: Russian Life
Answer: B,A