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: 4g basic phone with keyboard
Product list:
A: Unlocked Rugged Phone,Waterproof IP68,Lightweight,High Flashlight,GSM Quad Band (850/900/1800/1900Mhz) - Yellow
B: BLU Advance S5 HD  Unlocked Single Sim Smartphone, 16GB+1GB RAM -Black
Answer: A,B