Reflect on the provided data and tweets to anticipate if the closing price of $mrk is going to increase or decrease at 2020-09-21. Kindly respond with either Rise or Fall.
Context: date,open,high,low,close,adj-close,inc-5,inc-10,inc-15,inc-20,inc-25,inc-30
2020-09-04,0.4,1.9,-1.2,-0.3,-0.3,0.3,0.4,0.1,-0.8,-1.5,-2.4
2020-09-08,3.1,3.1,-0.4,-2.2,-2.2,2.1,2.4,2.3,1.6,0.8,0.0
2020-09-09,-1.3,1.1,-1.4,1.9,1.9,0.3,0.4,0.4,0.0,-0.9,-1.6
2020-09-10,1.4,1.6,-0.3,-1.5,-1.5,1.1,1.8,1.9,1.6,0.8,0.1
2020-09-11,-0.8,0.5,-0.8,1.1,1.1,-0.2,0.5,0.8,0.6,-0.2,-0.7
2020-09-14,0.0,1.1,-0.5,-0.4,0.3,-0.7,0.1,0.4,0.3,-0.3,-0.9
2020-09-15,0.6,1.1,-0.7,0.1,0.1,-0.4,-0.0,0.3,0.3,-0.2,-0.9
2020-09-16,-1.3,0.6,-1.3,1.6,1.6,-1.7,-1.4,-1.3,-1.2,-1.5,-2.3
2020-09-17,-0.3,0.2,-1.4,0.1,0.1,-1.1,-1.6,-1.3,-1.2,-1.5,-2.2
2020-09-18,-0.3,0.6,-1.0,0.2,0.2,-0.9,-1.7,-1.4,-1.4,-1.5,-2.2


Answer:
Fall