Instruction: Evaluate the relevance of each product title in the input to the given query, and then sort the products in descending order of relevance, placing the most relevant product at the top of the ranked list.

Input:
Query: pioneer line set cover
Product list:
A: MrCool LineGuard 4.5" Line Set Cover - 12 ft
B: Pioneer Decorative PVC Slim Line Cover Kit for Mini Split Air Conditioners and Heat Pumps
Answer: B,A