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: the secret keeper
Product list:
A: The Secret Keeper
B: Kingdom Keepers: The Return: Disney Lands, Book One
Answer: A,B