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: backdrop for photography
Product list:
A: LYWYGG 7x5FT Green Leaves Photography Backdrops Mmicrofiber Nature Backdrop Birthday Background for Birthday Party Seamless Photo Booth Prop Backdrop CP-87
B: MOUNTDOG Photo Studio Backdrop Support System, 10FT Adjustable Photography Background Stand Kit with Backdrop Clamps, 2 Sandbags, and Carrying Bag for Portrait & Studio Photography
Answer: A,B