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: doctors without borders
Product list:
A: Beyond Borders: Reflections from the Humanitarian Frontline
B: Second Suns: Two Trailblazing Doctors and Their Quest to Cure Blindness, One Pair of Eyes at a Time
C: Blue Q Socks, Men's Crew, This Meeting is Bulls--t Size 7-12
D: Blood Pressure Down: The 10-Step Plan to Lower Your Blood Pressure in 4 Weeks--Without Prescription Drugs
Answer: A,D,B,C