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:2020-12-16, Stock:RIO, The news for the past five days is as follows:
2020-12-09: NEWS1: Rio Tinto declares maiden Ore Reserve at Jadar.NEWS2: A Trio of Potential Bargains.NEWS3: Rio Urged To Make Restitution Over Aboriginal Site Blasts.NEWS4: Rio Tinto acknowledges interim report from Australian Parliamentary Committee.
2020-12-10: NEWS1: Iron Ore Is This Year’s Hottest Commodity on China-Fueled Surge.
2020-12-11: nan
2020-12-14: nan
2020-12-15: NEWS1: Rio Tinto’s partnership with SM TAFE, WA Government wins global award.

Answer: Decrease