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:2021-08-31, Stock:RIO, The news for the past five days is as follows:
2021-08-24: NEWS1: Rio Tinto resumes operations at Richards Bay Minerals.NEWS2: Rio Tinto and Sumitomo to assess hydrogen pilot plant at Gladstone’s Yarwun alumina refinery.
2021-08-25: nan
2021-08-26: NEWS1: Rio Tinto-led plan for major lithium mine stirs protests in Serbia.NEWS2: Oil’s Comeback Is Lifting Commodity Prices.
2021-08-27: nan
2021-08-30: NEWS1: Iron Ore Giant Plans Carbon Targets for Customers in Green Pivot.

Answer: Decrease