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: 18 ft pool heater
Product list:
A: VEVOR Electric Pool Heater 11KW 240V Swimming Pool Electric Heater Water Bath Heater Electric Digital fit for Thermostat, fit for Max 1981 Gallon Pool Equipment,Note:You Must Wire This Item Yourself
B: VINGLI Pool Cover Reel Set 18 Feet Pool Solar Cover Reel for Inground Swimming Pool, Aluminum Solar Swimming Inground Cover Blanket Reel (Upgrade)
Answer: A,B