Instruction: Analyze the query and each product title. Sort the products in descending order based on their relevance to the query. The most relevant product should be at the top of the list, and output the ranked list.

Input:
Query: ipad air bluetooth keyboard
Product list:
A: Arteck HB030B Universal Slim Portable Wireless Bluetooth 3.0 7-Colors Backlit Keyboard with Built in Rechargeable Battery, Black
B: iPad Keyboard Case 9.7 for New iPad 2018 (6th Gen) - iPad Pro 2017 (5th Gen) - iPad Air 2/1 - COO Detachable Wireless Bluetooth Keyboard - Magnetic Auto Sleep/Wake (Galaxy with White Keyboard)
Answer: A,B