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:2019-11-29, Stock:RIO, The news for the past five days is as follows:
2019-11-21: NEWS1: Rio Tinto faces having to renegotiate terms of Mongolian copper project.NEWS2: Mongolia parliament seeks ‘improved contracts’ for Rio Tinto mine.
2019-11-22: nan
2019-11-25: nan
2019-11-26: NEWS1: Here's Why I Think Rio Tinto Group (LON:RIO) Is An Interesting Stock.NEWS2: Mongolia says Rio-led copper project will go ahead.NEWS3: Rio’s Mongolia copper project will go ahead.
2019-11-27: NEWS1: Canada's First Quantum may team-up with Rio Tinto to develop Peru copper mine.NEWS2: REFILE-Canada's First Quantum may team-up with Rio Tinto to develop Peru copper mine.NEWS3: Rio Tinto Declares Force Majeure on Canadian Aluminum Sales.NEWS4: Rio Spending $4 Billion on Iron Ore Pipeline Amid China Demand.NEWS5: Rio Tinto and First Quantum in talks over Peru mine.NEWS6: Rio and First Quantum in talks over Peru mine.

Answer: Decrease