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: generac generator with automatic transfer switch
Product list:
A: Westinghouse Outdoor Power Equipment ST Switch with Smart Portable Automatic Transfer Technology Home Standby Alternative, For Sump Pumps, Refrigerators, and More
B: Generac G0071720 10 kW Guardian Home Standby Generator, Bisque
Answer: B,A