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:2018-10-23, Stock:RIO, The news for the past five days is as follows:
2018-10-16: NEWS1: Asian Markets In Positive Territory.NEWS2: Asian Markets In Positive Territory.NEWS3: Australian Market Extends Gains.NEWS4: Australian Market Extends Gains.NEWS5: Has Freeport-McMoran Stock Finally Bottomed Out?.NEWS6: Alcoa: Key Updates Markets Might Watch.NEWS7: Can Alcoa’s Q3 Earnings Improve Its Dismal Stock Performance?.
2018-10-17: NEWS1: 5 Companies To Watch In The Next Commodity Boom.NEWS2: Asian Markets Decline After Fed Hints At More Rate Hikes.NEWS3: Asian Markets Decline After Fed Hints At More Rate Hikes.NEWS4: Australian Market Declines.NEWS5: Australian Market Declines.NEWS6: Freeport CEO May Be Ready to Sell, But Are There any Buyers?.NEWS7: Are Mining Companies Bullish on Copper?.NEWS8: How the Markets Are Valuing Freeport-McMoRan.
2018-10-18: NEWS1: Asian Markets Mostly Lower After China GDP Data Disappoints.NEWS2: Asian Markets Mostly Lower After China GDP Data Disappoints.NEWS3: Australian Market Declines.NEWS4: Australian Market Declines.
2018-10-19: NEWS1: Can Freeport Turn Things Around with Its Third-Quarter Earnings?.NEWS2: Asian Shares Mixed On Weak China Data.NEWS3: Asian Shares Mixed On Weak China Data.NEWS4: [$$] ‘Saviour of steel’ Sanjeev Gupta asks rivals for loans.
2018-10-22: NEWS1: Interesting RIO Put And Call Options For December 21st.NEWS2: Interesting RIO Put And Call Options For December 21st.NEWS3: Is Freeport Cheaper Now Compared to Its 2016 Lows?.NEWS4: Should Freeport Consider a Share Buyback?.NEWS5: Asian Shares Mixed Amid Geopolitical Concerns.NEWS6: Asian Shares Mixed Amid Geopolitical Concerns.

Answer: Decrease