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: pool solar heater
Product list:
A: KOLERFLO 3/4 Inch Hot Water Circulating Pump 3-Speed Circulation Water Pump for Solar Heater System(RS15-6 Red)
B: CalPalmy Immersion Heater | Submersible Water Heating with Stainless-Steel Guard and Thermostat | Heats 5 Gallons of Water in Minutes | Great for Bathtub,Inflatable Pool - (FULLY IMMERSED WHILE USING)
Answer: A,B