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:2019-09-19, Stock:COST, The news for the past five days is as follows:
2019-09-12: NEWS1: Costco (COST) Stock Sinks As Market Gains: What You Should Know.NEWS2: Amazon Wants to Hire 30,000 Workers. Will It Succeed?.NEWS3: Amazon Wants to Hire 30,000 Workers. Will It Succeed?.NEWS4: Costco: Why Oppenheimer Downgraded Its Stock.
2019-09-13: NEWS1: Is Costco Stock A Buy Right Now? Here's What Earnings, Chart Say.
2019-09-16: NEWS1: Things You Must Know Before NIKE's (NKE) Q1 Earnings Results.
2019-09-17: NEWS1: Yemen's Houthi rebel attack on Saudi Arabia oil may hit Costco and BJ's profits.
2019-09-18: NEWS1: Redbook Shows US Same-Store Sales Gained More Than 5% Last Week.NEWS2: 17 Consumer Staples Stocks to Take the Edge Off Your Portfolio.NEWS3: Things You Must Know Prior to Rite Aid's (RAD) Q2 Earnings.NEWS4: TGT or COST: Which Is the Better Value Stock Right Now?.

Answer: Decrease