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:2018-12-14, Stock:RIO, The news for the past five days is as follows:
2018-12-07: NEWS1: What Is Vale’s Iron Ore Price Outlook?.NEWS2: What Will Drive Vale’s Iron Ore EBITDA?.NEWS3: Vale Stock Could Benefit from Focus on Shareholder Returns.
2018-12-10: NEWS1: Asian Markets Exhibit Mixed Trend.NEWS2: Asian Markets Exhibit Mixed Trend.NEWS3: Australian Market Rises.NEWS4: Australian Market Rises.NEWS5: Vale Has Delivered on Deleveraging Plan: What’s Next?.
2018-12-11: NEWS1: Asian Markets Advance On U.S.-China Trade Optimism.NEWS2: Asian Markets Advance On U.S.-China Trade Optimism.NEWS3: Can Industrial Metals Make a Comeback? (RIO, FCX).NEWS4: Australian Market Extends Gains.NEWS5: Australian Market Extends Gains.NEWS6: How Vale’s Valuation Multiples Look.NEWS7: Goldcorp Inc. (GG) Ex-Dividend Date Scheduled for December 12, 2018.NEWS8: Goldcorp Inc. (GG) Ex-Dividend Date Scheduled for December 12, 2018.NEWS9: Is Analyst Sentiment Turning Positive for Vale?.NEWS10: These Factors Could Boost Vale’s Cash Flows Going Forward.NEWS11: Asian Shares End Choppy Session Mixed.NEWS12: Asian Shares End Choppy Session Mixed.NEWS13: Rio Tinto partner says yet to make big copper find at Western Australia site.
2018-12-12: NEWS1: Is the Party Over for Commodities as China Steel Feels the Heat?.NEWS2: China’s Iron Ore Imports Have Fallen, Outlook Remains Muted.NEWS3: European markets climb higher; British PM faces confidence vote; Pandora shares fall 8%.NEWS4: [$$] Former Xstrata CEO Mick Davis joins board of coal start-up Arq.
2018-12-13: NEWS1: Asian Markets Lower On Weak China Economic Data.NEWS2: Asian Markets Lower On Weak China Economic Data.NEWS3: Australian Market Declines.NEWS4: Australian Market Declines.NEWS5: Will Chinese Steel Mills’ Pains Intensify with the Trade War?.NEWS6: Why China’s Steel Production Can’t Buck the Downtrend for Long.

Answer: Decrease