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:2021-12-22, Stock:CAT, The news for the past five days is as follows:
2021-12-15: NEWS1: Caterpillar (CAT), Chevron to Pilot Hydrogen-Powered Locomotive.
2021-12-16: NEWS1: 3 Dividend Stocks That Will Pay You Forever.NEWS2: Should You Be Impressed By Caterpillar Inc.'s (NYSE:CAT) ROE?.
2021-12-17: nan
2021-12-20: nan
2021-12-21: NEWS1: Caterpillar (CAT) Gains But Lags Market: What You Should Know.NEWS2: Cat Financial Contributes to the National Museum of African American Music to Promote Education, Understanding and Diversity to Youth Throughout the Nashville Area.

Answer: Rise