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:2018-10-15, Stock:COST, The news for the past five days is as follows:
2018-10-08: NEWS1: Market Close Report: NASDAQ Composite index closes at 7,735.95 down -52.50 points.NEWS2: Market Close Report: NASDAQ Composite index closes at 7,735.95 down -52.50 points.NEWS3: Monday Madness: Tesla's Making Headlines.NEWS4: SHAREHOLDER ALERT: Levi & Korsinsky, LLP Notifies Investors of an Investigation Involving Possible Securities Fraud Violations by Certain Officers and Directors of Costco Wholesale Corporation.NEWS5: Monday’s Vital Data: Costco, General Electric and Tesla.NEWS6: Monday’s Vital Data: Costco, General Electric and Tesla.NEWS7: As the Competition Heats Up, Walmart Stock Can Keep Drifting Down.NEWS8: Costco Stock Down 9.4%: Could This Mean ‘Buy’?.NEWS9: Company News For Oct 8, 2018.NEWS10: Company News For Oct 8, 2018.NEWS11: With Costco Stock, Name Your Price and Save Big.NEWS12: With Costco Stock, Name Your Price and Save Big.NEWS13: Costco Stock Can Overcome an Accounting ‘Embarrassment’.NEWS14: Could COST, WMT, and TGT Stock Shine This Holiday Season?.NEWS15: The Zacks Analyst Blog Highlights: Home Depot, Bristol-Myers, Costco, Ecolab and Ameriprise Financial.NEWS16: The Zacks Analyst Blog Highlights: Home Depot, Bristol-Myers, Costco, Ecolab and Ameriprise Financial.NEWS17: PriceSmart's (PSMT) Merchandise Sales Rise Again in September.NEWS18: PriceSmart's (PSMT) Merchandise Sales Rise Again in September.NEWS19: Macy's (M) Omnichannel Strategy, Private Brands to Lift Sales.NEWS20: Macy's (M) Omnichannel Strategy, Private Brands to Lift Sales.NEWS21: Company News For Oct 8, 2018.NEWS22: Retail Stocks in Retreat Despite Strong Consumer Spending.NEWS23: Why You Should Buy Costco's Dip Now.NEWS24: The Zacks Analyst Blog Highlights: Home Depot, Bristol-Myers, Costco, Ecolab and Ameriprise Financial.NEWS25: Monday’s Vital Data: Costco, General Electric and Tesla.NEWS26: Exclusive: Costco in the Houston market for up to 1M SF of distribution space.NEWS27: Costco Selloff Was an Overreaction - Why You Should Buy This Dip.NEWS28: Costco: Analysts’ Recommendations after the Fourth Quarter.NEWS29: With Costco Stock, Name Your Price and Save Big.NEWS30: Edited Transcript of COST earnings conference call or presentation 4-Oct-18 9:00pm GMT.
2018-10-09: NEWS1: Cramer's consumer staples 'power ranking'.NEWS2: Cramer's 'power ranking' for consumer staples: Constellat....NEWS3: Cramer's consumer staples 'power ranking': Constellation, Costco, McCormick, Clorox, Estee Lauder.NEWS4: Target (TGT) Launches In-House Brand Amid Price War.NEWS5: Target (TGT) Launches In-House Brand Amid Price War.NEWS6: Walmart Gets Newfound Love From Wall Street - Here's Why.NEWS7: How 1 Big Concern Overshadowed Costco's Successful Year.NEWS8: How 1 Big Concern Overshadowed Costco's Successful Year.NEWS9: How 1 Big Concern Overshadowed Costco&apos;s Successful Year.NEWS10: 4 Things Costco Investors Should Be Really Happy About.NEWS11: 4 Things Costco Investors Should Be Really Happy About.NEWS12: 4 Things Costco Investors Should Be Really Happy About.
2018-10-10: NEWS1: Costco (COST) Stock Moves -1.39%: What You Should Know.NEWS2: Costco (COST) Stock Moves -1.39%: What You Should Know.NEWS3: 3 Big Takeaways From Costco's Fourth-Quarter Report.NEWS4: 3 Big Takeaways From Costco's Fourth-Quarter Report.NEWS5: 3 Big Takeaways From Costco&apos;s Fourth-Quarter Report.NEWS6: Costco (COST) Stock Moves -1.39%: What You Should Know.NEWS7: Costco Wholesale Corporation Reports September Sales Results.NEWS8: Costco Looks Vulnerable to a Decline to the $200 Support Area.NEWS9: How Kroger’s Ratings Have Changed Recently.NEWS10: Walmart Stock: What Wall Street Recommends.NEWS11: Costco Wholesale September Sales Up 10%.NEWS12: Costco Wholesale September Sales Up 10%.NEWS13: DOJ approves CVS, Aetna; Broadcom drops; Costco streaming; Starbucks offers new perk; Microsoft sinks.NEWS14: Who Will Fill the Void Left by Toys "R" Us This Holiday Season?.
2018-10-11: NEWS1: Mastering the Market Cycle.NEWS2: Mastering the Market Cycle.NEWS3: Noteworthy Thursday Option Activity: COST, PGR, CVS.NEWS4: Noteworthy Thursday Option Activity: COST, PGR, CVS.NEWS5: Costco Announces 10.3% Growth in Net Sales.NEWS6: Costco Defies Market, Posts Gains on Strong Sales.NEWS7: Costco Posts Solid Comps Again, September Metric Up 8.4%.NEWS8: 12 Things Retirees Should Buy at Costco.NEWS9: Costco Sustained Growth Momentum in September.
2018-10-12: NEWS1: Company News For Oct 12, 2018.NEWS2: Company News For Oct 12, 2018.NEWS3: Company News For Oct 12, 2018.NEWS4: Why Costco’s Financial Warning Looks Like Much Ado About Nothing.

Answer: Decrease