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:2021-05-19, Stock:COST, The news for the past five days is as follows:
2021-05-12: NEWS1: Big US chains are offering perks to lure back service workers.NEWS2: Big US chains are offering perks to lure back service workers.NEWS3: Target has a stealth advantage over most retailers: Goldman Sachs.NEWS4: Why Costco is secretly a winner from Colonial Pipeline shutdown fueled gas lines.
2021-05-13: NEWS1: Costco (COST) Outpaces Stock Market Gains: What You Should Know.NEWS2: McDonald’s is bumping up pay as low-wage workers suddenly have options.
2021-05-14: nan
2021-05-17: NEWS1: CVS, Target Drop Face-Mask Rules for Fully Vaccinated Customers.NEWS2: Retailers loosen mask restrictions.NEWS3: Mask mandate: These retailers will now let you shop without a mask.NEWS4: Is Costco Wholesale Corporation's (NASDAQ:COST) Stock's Recent Performance A Reflection Of Its Financial Health?.
2021-05-18: NEWS1: Starbucks, Target, Trader Joe's are dropping mask rules. Why California is stopping them for now.NEWS2: BJ's Wholesale Club Earnings: What to Watch on Thursday.NEWS3: Worried About a Market Downturn? Buy This Forever Stock..

Answer: Decrease