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:2018-06-20, Stock:RIO, The news for the past five days is as follows:
2018-06-13: NEWS1: Mongolian ex-finance minister held over mining deal released -sources.
2018-06-14: NEWS1: See How Newmont Mining Corp Ranks Among Analysts' Top Metals Picks.NEWS2: See How Newmont Mining Corp Ranks Among Analysts' Top Metals Picks.
2018-06-15: nan
2018-06-18: NEWS1: BHP Board Approves South Flank Project to Replace Yandi.NEWS2: BHP Board Approves South Flank Project to Replace Yandi.
2018-06-19: nan

Answer: Rise