Instruction: Given a query and a list of products denoted as A, B, C, ... with their titles, rank the products according to their relevance to the query. Output only a ranked list in which the most relevant product is at the top of the list.

Input:
Query: iphone x unlocked
Product list:
A: Apple iPhone X, US Version, 256GB, Space Gray - AT&T (Renewed)
B: Apple iPhone 7 Plus, US Version, 128GB, Black - Unlocked (Renewed)
Answer: A,B