Analyze the information and social media posts to determine if the closing price of $rds-b will ascend or descend at 2015-07-20. Please 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
2015-07-06,0.1,0.5,-0.4,-1.6,-1.6,1.4,3.9,4.3,4.4,4.6,5.2
2015-07-07,-1.0,0.3,-2.6,-0.7,-0.7,1.4,3.9,4.7,4.9,5.1,5.6
2015-07-08,0.9,1.0,-0.3,-0.7,-0.7,1.5,3.9,5.0,5.4,5.5,6.1
2015-07-09,0.6,0.7,-0.6,1.1,1.1,0.2,2.0,3.5,3.9,4.1,4.6
2015-07-10,-0.2,0.1,-1.0,2.6,2.6,-2.3,-1.0,0.6,1.1,1.3,1.7
2015-07-13,-0.0,0.3,-0.5,-0.6,-0.6,-1.3,-0.8,1.0,1.6,1.9,2.2
2015-07-14,-1.5,0.1,-1.7,1.8,1.8,-2.2,-2.5,-0.9,-0.2,0.1,0.4
2015-07-15,0.3,0.5,-0.4,-1.1,-1.1,-0.4,-1.3,-0.0,0.8,1.2,1.3
2015-07-16,0.2,0.6,-0.0,0.1,0.1,0.0,-1.2,-0.4,0.6,1.0,1.2
2015-07-17,0.6,0.6,-0.4,-0.4,-0.4,0.4,-0.8,-0.3,0.8,1.2,1.4


Answer: