Instruction: Rank the products A, B, C, ... based on their relevance to the provided query, and produce a ranked list with the most relevant product positioned at the top of the list.

Input:
Query: habits of a systems thinker
Product list:
A: Mind Hacking: How to Change Your Mind for Good in 21 Days
B: The Habit-Forming Guide to Becoming a Systems Thinker
Answer: B,A