Instruction: Analyze the query and each product title. Sort the products in descending order based on their relevance to the query. The most relevant product should be at the top of the list, and output the ranked list.

Input:
Query: smart robot companion for cat
Product list:
A: Robot Vacuum, GOOVI 1600PA Robotic Vacuum Cleaner with Self-Charging, 360 Smart Sensor Protectio, Multiple Cleaning Modes Vacuum Best for Pet Hairs, Hard Floor & Medium Carpet (Black)
B: LUCKYBIRD Ebo The Smart Robot Companion for Your Cat
Answer: B,A