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:2018-09-07, Stock:RIO, The news for the past five days is as follows:
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?.
2018-08-31: nan
2018-09-04: NEWS1: Asian Markets In Negative Territory.NEWS2: Asian Markets In Negative Territory.NEWS3: Australian Market Extends Losing Streak.NEWS4: Australian Market Extends Losing Streak.NEWS5: Inside Copper Miners’ 2018 Operating Plans.NEWS6: How Freeport’s Q2 2018 Shipments Compared to Its Peers’.NEWS7: How Copper Miners Stacked Up in the First Half.NEWS8: Aluminium producers offer Japanese buyers lower premiums for Q4 shipments -sources.
2018-09-05: NEWS1: Asian Markets Exhibit Mixed Trend.NEWS2: Asian Markets Exhibit Mixed Trend.NEWS3: Australian Market Notably Lower.NEWS4: Australian Market Notably Lower.NEWS5: Hudbay Minerals Inc. (HBM) Ex-Dividend Date Scheduled for September 06, 2018.NEWS6: Hudbay Minerals Inc. (HBM) Ex-Dividend Date Scheduled for September 06, 2018.NEWS7: Gold Fields Limited (GFI) Ex-Dividend Date Scheduled for September 06, 2018.NEWS8: Gold Fields Limited (GFI) Ex-Dividend Date Scheduled for September 06, 2018.NEWS9: BHP Billiton Limited (BHP) Ex-Dividend Date Scheduled for September 06, 2018.NEWS10: BHP Billiton Limited (BHP) Ex-Dividend Date Scheduled for September 06, 2018.NEWS11: Asian Shares Extend Losses On Trade Worries.NEWS12: Asian Shares Extend Losses On Trade Worries.
2018-09-06: NEWS1: Asian Markets Extend Losses On Trade Fears.NEWS2: Asian Markets Extend Losses On Trade Fears.NEWS3: Australian Market Extends Losing Streak.NEWS4: Australian Market Extends Losing Streak.NEWS5: Brazilian Presidential Candidate Jair Bolsonaro Stabbed.NEWS6: What Price Copper?.NEWS7: BHP Billiton Buys Stake in SolGold, Ups Copper Exposure.NEWS8: BHP Billiton Buys Stake in SolGold, Ups Copper Exposure.NEWS9: BHP Billiton Buys Stake in SolGold, Ups Copper Exposure.NEWS10: Mountain Province Diamonds Inc. (MPVD) Ex-Dividend Date Scheduled for September 07, 2018.NEWS11: Mountain Province Diamonds Inc. (MPVD) Ex-Dividend Date Scheduled for September 07, 2018.NEWS12: Asian Shares Fall Amid Tariff Worries.NEWS13: Asian Shares Fall Amid Tariff Worries.

Answer: Decrease