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:2018-08-31, Stock:RIO, The news for the past five days is as follows:
2018-08-24: nan
2018-08-27: nan
2018-08-28: NEWS1: Asian Markets Mostly Higher Amid Focus On Trade Talks.NEWS2: Asian Markets Mostly Higher Amid Focus On Trade Talks.NEWS3: Australian Market Edges Higher.NEWS4: Australian Market Edges Higher.NEWS5: Alcoa Could Benefit If Canada Is Exempt from the Tariffs.NEWS6: [$$] Coal industry between a rock and a hard place.
2018-08-29: NEWS1: Asian Markets Mostly Higher With Modest Gains.NEWS2: Asian Markets Mostly Higher With Modest Gains.NEWS3: Australian Market Extends Gains.NEWS4: Australian Market Extends Gains.NEWS5: Moving Average Crossover Alert: Rio Tinto (RIO).NEWS6: Moving Average Crossover Alert: Rio Tinto (RIO).NEWS7: Barrick Gold Corporation (ABX) Ex-Dividend Date Scheduled for August 30, 2018.NEWS8: Barrick Gold Corporation (ABX) Ex-Dividend Date Scheduled for August 30, 2018.NEWS9: Agnico Eagle Mines Limited (AEM) Ex-Dividend Date Scheduled for August 30, 2018.NEWS10: Agnico Eagle Mines Limited (AEM) Ex-Dividend Date Scheduled for August 30, 2018.NEWS11: Moving Average Crossover Alert: Rio Tinto (RIO).
2018-08-30: NEWS1: Asian Markets Mostly Lower On Trade War Fears.NEWS2: Asian Markets Mostly Lower On Trade War Fears.NEWS3: Should You Buy Rio Tinto Limited (ASX:RIO) For Its Dividend?.NEWS4: Australian Market Declines.NEWS5: Australian Market Declines.NEWS6: How Long Can China’s Steel Prices Keep Supporting the Sector?.NEWS7: China Steel Production Hits New High.NEWS8: Alcoa Stock: Can the Uptrend Continue?.

Answer: Decrease