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:2018-11-09, Stock:RIO, The news for the past five days is as follows:
2018-11-02: NEWS1: How Electric Vehicles Should Give a Jolt to Copper Miners.
2018-11-05: NEWS1: Southern Copper Corporation (SCCO) Ex-Dividend Date Scheduled for November 06, 2018.NEWS2: Southern Copper Corporation (SCCO) Ex-Dividend Date Scheduled for November 06, 2018.NEWS3: Asian Shares Retreat Ahead Of US Elections, Fed Meeting.NEWS4: Asian Shares Retreat Ahead Of US Elections, Fed Meeting.
2018-11-06: NEWS1: Asian Markets Mostly Higher With Modest Gains.NEWS2: Asian Markets Mostly Higher With Modest Gains.NEWS3: Australian Market Declines.NEWS4: Australian Market Declines.NEWS5: Should You Buy Paypal Holdings Inc (PYPL)?.
2018-11-07: NEWS1: Anglo Finds Returns Outweigh Risks as Miner Renews Africa Focus.NEWS2: Asian Shares Mixed As Investors Digest US Election Results.NEWS3: Asian Shares Mixed As Investors Digest US Election Results.
2018-11-08: nan

Answer: Decrease