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:2018-02-16, Stock:RIO, The news for the past five days is as follows:
2018-02-09: NEWS1: Rio Tinto (Commercial Paper) plc -- Moody's says Rio Tinto's 2017 results are credit positive.NEWS2: Top 4 Coal-Mining Stocks as of February 2018.NEWS3: After Dividend Reinstatement, What’s Freeport’s Next Priority?.NEWS4: Southern Copper Corporation (SCCO) Ex-Dividend Date Scheduled for February 12, 2018.NEWS5: Southern Copper Corporation (SCCO) Ex-Dividend Date Scheduled for February 12, 2018.NEWS6: Dividends: Mining Companies Are Once Bitten, Twice Shy.NEWS7: Cleveland-Cliffs and Volatile Seaborne Iron Ore Prices.NEWS8: New Strong Sell Stocks for February 9th.NEWS9: New Strong Sell Stocks for February 9th.NEWS10: Why Miners Are Favoring a Flexible Dividend Policy.NEWS11: New Strong Sell Stocks for February 9th.
2018-02-12: NEWS1: Do China’s Steel Demand Indicators Signal Slow Growth in 2018?.
2018-02-13: NEWS1: What Analysts Project for Freeport-McMoRan This Year.NEWS2: Can ArcelorMittal Succeed in India by Acquiring Essar Steel?.NEWS3: S&P upgrades Rio Tinto, flags well-placed for M&A.NEWS4: S&P upgrades Rio Tinto, flag well-placed for M&A.NEWS5: S&P upgrades Rio Tinto, flags well-placed for M&A.
2018-02-14: nan
2018-02-15: NEWS1: How Analysts Rate Southern Copper after 4Q17 Earnings.NEWS2: [$$] Rio Tinto appoints Royal Mail CEO to board.

Answer: Decrease