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:2018-08-21, Stock:PM, The news for the past five days is as follows:
2018-08-14: NEWS1: Bulls bet on Constellation brands, this social stock.
2018-08-15: nan
2018-08-16: NEWS1: IWD, MRK, PM, ORCL: Large Outflows Detected at ETF.NEWS2: IWD, MRK, PM, ORCL: Large Outflows Detected at ETF.NEWS3: [$$] Celebrity ‘influencers’ probed in UK over social media adverts.
2018-08-17: NEWS1: British American Tobacco a Top Ranked SAFE Dividend Stock With 5.1% Yield (BTI).NEWS2: British American Tobacco a Top Ranked SAFE Dividend Stock With 5.1% Yield (BTI).
2018-08-20: nan

Answer: Decrease