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:2020-12-07, Stock:RIO, The news for the past five days is as follows:
2020-11-30: nan
2020-12-01: NEWS1: CIMA FINANCE DAC SERIES 2020-6 -- Moody's assigns definitive rating to CiMA Finance Designated Activity Company series 2020-6 notes.NEWS2: Turquoise Hill says special committee to review Oyu Tolgoi cost overruns.
2020-12-02: NEWS1: Is iShares MSCI Intl Multifactor ETF (INTF) a Strong ETF Right Now?.
2020-12-03: NEWS1: Rio Tinto Group's (LON:RIO) Stock's On An Uptrend: Are Strong Financials Guiding The Market?.NEWS2: Australian inquiry into sacred cave destruction seen recommending mining reforms.NEWS3: Human Academy Japanese Language School's Online E-commerce Platform Now Equipped with Multi-currency Credit Card Payment Function.
2020-12-04: NEWS1: Billionaire Glasenberg’s Reign Spanned IPO Glory to Graft Probes.

Answer: Decrease