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:2021-09-29, Stock:RIO, The news for the past five days is as follows:
2021-09-22: NEWS1: Iron ore: Why this left-for-dead metal could rocket, and 4 easy ways to buy it.
2021-09-23: NEWS1: BHP, Rio Tinto, and Vale Stocks Look Cheap Based on Current Iron-Ore Prices.
2021-09-24: NEWS1: September Sell-Off: How to Navigate the Market.NEWS2: Fine Dining, Luxe Living Lure Workers to World’s Remotest Mines.
2021-09-27: nan
2021-09-28: NEWS1: 10 Best International Stocks in 2021.

Answer: Decrease