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:2019-09-18, Stock:VALE, The news for the past five days is as follows:
2019-09-11: nan
2019-09-12: NEWS1: EMERGING MARKETS-Latam stocks scale one-month highs on China-U.S. trade optimism.NEWS2: Brazil development bank BNDES mulls strategy for Petrobras, Vale asset sales -sources.NEWS3: Brazil miner Vale to buy back up to $1 billion bonds - filing.
2019-09-13: nan
2019-09-16: nan
2019-09-17: NEWS1: Brazil probe into Vale dam collapse to conclude within days, prosecutor says.NEWS2: FOCUS-Vale misled public on dangerous dams, prompting Brazil probe -source.NEWS3: Vale misled public on dangerous dams, prompting Brazil probe: source.NEWS4: FOCUS-Vale misled public on dangerous dams, prompting Brazil probe -source.

Answer: Decrease