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:2019-08-09, Stock:COST, The news for the past five days is as follows:
2019-08-02: NEWS1: ProShares ProShares UltraPro QQQ Experiences Big Outflow.NEWS2: ProShares ProShares UltraPro QQQ Experiences Big Outflow.
2019-08-05: NEWS1: Wells Fargo Commercial Mortgage Trust 2013-LC12 -- Moody's affirms twelve classes of WFCM 2013-LC12.
2019-08-06: NEWS1: This is why large retailers like Amazon, Walmart & Costco won’t be as impacted by fresh tariffs.
2019-08-07: NEWS1: 5 Products You Can Buy at Costco For Cheap.NEWS2: Notable Wednesday Option Activity: FOSL, COST, KRA.NEWS3: Notable Wednesday Option Activity: FOSL, COST, KRA.NEWS4: Costco Wholesale Corporation Reports July Sales Results.NEWS5: Walmart Inc. (WMT) Ex-Dividend Date Scheduled for August 08, 2019.NEWS6: Walmart Inc. (WMT) Ex-Dividend Date Scheduled for August 08, 2019.
2019-08-08: NEWS1: Costco Stock Dips on Slower July Sales. It Will Take More to Truly Stop Its Rally..NEWS2: Amid Trade War Concerns, Costco’s July Sales Impress.

Answer: Decrease