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:2019-05-20, Stock:VALE, The news for the past five days is as follows:
2019-05-13: nan
2019-05-14: NEWS1: Brazil's Vale says co is reviewing its asset portfolio.
2019-05-15: NEWS1: Vale Canada and Terrapure win Environmental Leader Award for innovative mine rehabilitation project.
2019-05-16: NEWS1: Vale warns Brazil prosecutors another dam at risk of collapse.NEWS2: Shares of VALE Now Oversold.NEWS3: Shares of VALE Now Oversold.NEWS4: Vale tells prosecutors there is the risk of rupturing of new dam in Minas.
2019-05-17: NEWS1: Iron Ore Shortfall to Support Aussie Dollar and Exporters.NEWS2: Trump explains why he’s lifting steel & aluminum tariffs on Canada, Mexico.NEWS3: As Vale Warns of a Possible Dam Collapse, Iron Ore Surges.NEWS4: Iron-ore prices climb past $100 to the highest in 5 years.NEWS5: 3 Big Stock Charts for Friday: PPL, Electronic Arts and Tyson Foods.NEWS6: 3 Big Stock Charts for Friday: PPL, Electronic Arts and Tyson Foods.NEWS7: 3 Big Stock Charts for Friday: PPL, Electronic Arts and Tyson Foods.

Answer: Decrease