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:2018-07-30, Stock:COST, The news for the past five days is as follows:
2018-07-23: NEWS1: Notable Monday Option Activity: STMP, COST, ARII.NEWS2: Notable Monday Option Activity: STMP, COST, ARII.NEWS3: Seattle Children&apos;s names a building in honor of Costco and the Friends of Costco Guild.
2018-07-24: NEWS1: Will U.S. Volume Growth Aid Herbalife (HLF) in Q2 Earnings?.NEWS2: Will U.S. Volume Growth Aid Herbalife (HLF) in Q2 Earnings?.NEWS3: See what the IHS Markit Score report has to say about Costco Wholesale Corp..
2018-07-25: NEWS1: 3 Ways Amazon’s Q2 Earnings Get It to $2,000 by Fall.NEWS2: 3 Ways Amazon’s Q2 Earnings Get It to $2,000 by Fall.NEWS3: LVMH Louis Vuitton growth bodes well for these stocks, analysts say.NEWS4: 3 Ways Amazon’s Q2 Earnings Get It to $2,000 by Fall.NEWS5: Will Central Garden & Pet's (CENT) Earnings Increase in Q3?.NEWS6: Will Central Garden & Pet's (CENT) Earnings Increase in Q3?.NEWS7: 4 Retail Stocks Shattering Records Despite Amazon Threat.
2018-07-26: NEWS1: The Bull and Bear Case for BJ's Wholesale Club Stock.NEWS2: The Bull and Bear Case for BJ's Wholesale Club Stock.NEWS3: The Bull and Bear Case for BJ&apos;s Wholesale Club Stock.NEWS4: MTUM, COST, ISRG, SPGI: ETF Inflow Alert.NEWS5: MTUM, COST, ISRG, SPGI: ETF Inflow Alert.NEWS6: Costco Wholesale Selects Zest Fresh to Enhance Its Fresh Food Supply Chain.
2018-07-27: NEWS1: Analysts Expect Blue Apron’s Revenue to Fall ~21%.

Answer: Decrease