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:2018-10-22, Stock:COST, The news for the past five days is as follows:
2018-10-15: NEWS1: Costco Wholesale Corporation (COST) Q4 2018 Earnings Conference Call Transcript.NEWS2: Costco Wholesale Corporation (COST) Q4 2018 Earnings Conference Call Transcript.NEWS3: Costco Wholesale Corporation (COST) Q4 2018 Earnings Conference Call Transcript.NEWS4: Sears Is Dead, But These 5 Retail Stocks Offer Hope.NEWS5: Costco Stock Is a Long-Term Winner, but Valuation Is Pretty Full.NEWS6: Costco Stock Is a Long-Term Winner, but Valuation Is Pretty Full.NEWS7: Trade war with China is taking a backseat to this other threat to corporate profits.NEWS8: Costco Stock Is a Long-Term Winner, but Valuation Is Pretty Full.
2018-10-16: NEWS1: Is Costco Stock a Buy or a Sell After Earnings and Sales Results?.NEWS2: Is Costco Stock a Buy or a Sell After Earnings and Sales Results?.NEWS3: Costco (COST) Gains But Lags Market: What You Should Know.NEWS4: Is Costco Stock a Buy or a Sell After Earnings and Sales Results?.NEWS5: Costco, Walmart Weigh Their Own Streaming Video Services.NEWS6: Costco, Walmart Weigh Their Own Streaming Video Services.NEWS7: Costco, Walmart Weigh Their Own Streaming Video Services.NEWS8: Netflix Spoiled Us Rotten.NEWS9: Netflix Spoiled Us Rotten.NEWS10: Sears Is Dead, But These 5 Retail Stocks Offer Hope.NEWS11: Sears Is Dead, But These 5 Retail Stocks Offer Hope.NEWS12: Walmart vs. Costco: Which Retailer Stock Is Right for You?.
2018-10-17: NEWS1: Crown Castle Earnings, Revenue beat in Q3.NEWS2: Costco (COST) Gains But Lags Market: What You Should Know.NEWS3: Costco (COST) Gains But Lags Market: What You Should Know.NEWS4: Forget Icahn & Dollar Tree, Buy These 3 Retail Stocks Instead.NEWS5: Forget Icahn & Dollar Tree, Buy These 3 Retail Stocks Instead.
2018-10-18: NEWS1: Noteworthy Thursday Option Activity: REV, COST, ADSK.NEWS2: Noteworthy Thursday Option Activity: REV, COST, ADSK.NEWS3: See what the IHS Markit Score report has to say about Costco Wholesale Corp..NEWS4: Can Blue Apron Capitalize on the Growing Market?.NEWS5: The tariff effect on earnings.
2018-10-19: NEWS1: 7 Amazon-Proof Stocks to Consider Adding to Your Portfolio.NEWS2: Detailed Research: Economic Perspectives on BeiGene, Costco Wholesale, Rogers, Advance Auto Parts, Celcuity, and Harris — What Drives Growth in Today's Competitive Landscape.

Answer: Decrease