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:2019-11-01, Stock:RIO, The news for the past five days is as follows:
2019-10-25: nan
2019-10-28: NEWS1: Miner Seeks Answers Amid Indonesia Nickel Shock: LME Week Update.
2019-10-29: nan
2019-10-30: nan
2019-10-31: NEWS1: Is Rio Tinto Group's (LON:RIO) CEO Paid At A Competitive Rate?.NEWS2: Rio Tinto expects higher costs for flagship iron ore business.NEWS3: Rio Tinto Says Iron Ore Shipments to Rise in 2020 and Beyond.

Answer: Rise