Instruction: Evaluate each product title in the given list, assess its relevance to the given query, and then arrange the products in descending order of relevance, with the most relevant product at the top of the ranked list.

Input:
Query: halo mythus book
Product list:
A: Heroes: The Greek Myths Reimagined
B: Halo Mythos: A Guide to the Story of Halo
Answer: B,A