Analyze the information and social media posts to determine if the closing price of $ptr will ascend or descend at 2015-08-31. 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
2015-08-17,-0.4,0.2,-1.1,-0.2,-0.2,0.7,0.9,2.6,3.7,5.0,6.0
2015-08-18,-0.3,0.6,-0.5,-1.0,-1.0,1.4,1.6,3.1,4.2,5.5,6.6
2015-08-19,1.6,1.6,-0.9,-2.8,-2.8,3.2,4.1,5.2,6.5,8.0,9.2
2015-08-20,1.3,1.7,-0.1,-4.0,-4.0,5.6,7.5,8.5,10.1,11.7,13.1
2015-08-21,2.5,2.9,-0.0,-3.8,-3.8,7.2,10.5,11.6,13.5,15.2,16.7
2015-08-24,-1.8,4.7,-2.5,-4.7,-4.7,8.9,13.9,15.7,18.0,19.6,21.4
2015-08-25,4.7,5.0,-0.3,0.1,0.1,5.4,11.9,14.2,16.6,18.4,20.2
2015-08-26,0.3,0.6,-2.6,3.6,3.6,-0.1,6.5,9.3,11.4,13.4,15.3
2015-08-27,-3.5,1.2,-3.5,6.0,6.0,-5.6,-0.4,2.6,4.4,6.3,8.1
2015-08-28,-0.6,0.6,-1.0,-2.2,-2.2,-3.0,0.9,4.3,6.0,8.1,9.9


Answer:
Analyze the information and social media posts to determine if the closing price of $ptr will ascend or descend at 2015-08-31. 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
2015-08-17,-0.4,0.2,-1.1,-0.2,-0.2,0.7,0.9,2.6,3.7,5.0,6.0
2015-08-18,-0.3,0.6,-0.5,-1.0,-1.0,1.4,1.6,3.1,4.2,5.5,6.6
2015-08-19,1.6,1.6,-0.9,-2.8,-2.8,3.2,4.1,5.2,6.5,8.0,9.2
2015-08-20,1.3,1.7,-0.1,-4.0,-4.0,5.6,7.5,8.5,10.1,11.7,13.1
2015-08-21,2.5,2.9,-0.0,-3.8,-3.8,7.2,10.5,11.6,13.5,15.2,16.7
2015-08-24,-1.8,4.7,-2.5,-4.7,-4.7,8.9,13.9,15.7,18.0,19.6,21.4
2015-08-25,4.7,5.0,-0.3,0.1,0.1,5.4,11.9,14.2,16.6,18.4,20.2
2015-08-26,0.3,0.6,-2.6,3.6,3.6,-0.1,6.5,9.3,11.4,13.4,15.3
2015-08-27,-3.5,1.2,-3.5,6.0,6.0,-5.6,-0.4,2.6,4.4,6.3,8.1
2015-08-28,-0.6,0.6,-1.0,-2.2,-2.2,-3.0,0.9,4.3,6.0,8.1,9.9


Answer:+Fall