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:2020-12-21, Stock:WELL, The news for the past five days is as follows:
2020-12-14: NEWS1: KeyBanc Upgrades Welltower On Expected Recovery In Senior Housing.
2020-12-15: NEWS1: Welltower to Participate in MKM Partners Virtual Conference and Issues Business Update.NEWS2: Welltower and Wafra Announce $550 Million Medical Office Building Joint Venture.
2020-12-16: NEWS1: Welltower (WELL) Disposes Medical Office Assets, Updates on Business.
2020-12-17: nan
2020-12-18: nan

Answer: Decrease