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:2021-02-09, Stock:RIO, The news for the past five days is as follows:
2021-02-02: nan
2021-02-03: nan
2021-02-04: NEWS1: Rio Tinto board could face pressure on Indigenous broken promise claim.NEWS2: Rio chairman accused of breaking promise over rock cave blasts.
2021-02-05: NEWS1: Why Palantir’s Long-Term Prospects Are Brighter than Ever.NEWS2: Rio Tinto issues mea culpa over Indigenous leadership upset.
2021-02-08: NEWS1: UPDATE 2-Mongolia seeks more tax revenue from Rio copper mine expansion -source.NEWS2: UPDATE 2-Mongolia seeking pact with Rio Tinto to replace copper mine expansion plan -FT.

Answer: Rise