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:2018-05-11, Stock:RIO, The news for the past five days is as follows:
2018-05-04: NEWS1: Freeport-McMoRan: Analyzing the Grasberg Concerns.NEWS2: How Aluminum Producers’ Earnings Look in Light of Tariffs.NEWS3: President Trump Is the New Wild Card for the Aluminum Industry.NEWS4: BLOG: The Permian Can Help Satisfy China&apos;s LNG Appetite.
2018-05-07: NEWS1: Southern Copper Corporation (SCCO) Ex-Dividend Date Scheduled for May 08, 2018.NEWS2: Southern Copper Corporation (SCCO) Ex-Dividend Date Scheduled for May 08, 2018.NEWS3: 5 Reasons to Consider Freeport-McMoRan.NEWS4: Grasberg Impacts Freeport-McMoRan’s Valuation.
2018-05-08: NEWS1: Can Chinese Copper Imports Help Lift Freeport-McMoRan Stock?.NEWS2: Freeport Indonesia divestment still targeted for this year, Inalum says.
2018-05-09: nan
2018-05-10: NEWS1: Alcoa and Rio Tinto Announce World’s First Carbon-Free Aluminum Smelting Process.NEWS2: Apple Backs Alcoa, Rio Tinto to Develop Carbon-Free Metal Making.NEWS3: [$$] Apple looks to ‘green’ metal for use in iPhone and MacBook.

Answer: Rise