Based on the news about the stock in the past five trading days, please predict the rise or fall of the stock in the next trading day. If the stock is predicted to rise in the next trading day, please output [Rise], if the stock is predicted to fall in the next trading day, please output [Decrease].

Date:2021-10-22, Stock:BHP, The news for the past five days is as follows:
2021-10-15: nan
2021-10-18: NEWS1: Australian Magnate Beats BHP on ‘Superior’ Offer for Canadian Nickel Miner.
2021-10-19: NEWS1: UPDATE 2-BHP sweetens offer for Canadian nickel miner Noront to $339 mln.NEWS2: BHP sweetens offer for Canadian nickel miner Noront to $339 million.NEWS3: Could The BHP Group (ASX:BHP) Ownership Structure Tell Us Something Useful?.NEWS4: BHP Group's (BHP) Q1 Iron Ore Output Dips on Planned Maintenance.
2021-10-20: NEWS1: BHP Ups Stakes in Battle With Billionaire for Nickel Miner.
2021-10-21: NEWS1: BHP studies the potential for using nickel mine waste to capture carbon.

Answer: Rise