Scrutinize the data and tweets to envisage if the closing price of $ptr will swell or contract at 2015-08-20. Please affirm either Rise or Fall.
Context: date,open,high,low,close,adj-close,inc-5,inc-10,inc-15,inc-20,inc-25,inc-30
2015-08-06,0.0,0.4,-0.5,0.1,0.1,1.1,3.1,4.8,6.0,7.3,9.0
2015-08-07,1.0,1.3,-0.3,-1.1,-1.1,1.2,3.6,5.2,6.6,7.8,9.5
2015-08-10,-1.0,0.0,-1.1,2.1,2.1,-0.9,1.5,2.6,4.0,5.0,6.7
2015-08-11,-0.7,0.3,-1.1,-1.2,-1.2,0.1,2.2,3.3,4.7,5.7,7.4
2015-08-12,-1.2,0.2,-1.7,0.5,0.5,-0.3,0.8,2.3,3.8,4.9,6.3
2015-08-13,0.9,0.9,-0.1,0.0,0.0,-0.3,0.3,1.8,3.3,4.5,5.8
2015-08-14,-0.1,0.4,-0.4,-1.1,-1.1,0.9,0.9,2.5,3.9,5.2,6.4
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


Answer:
Scrutinize the data and tweets to envisage if the closing price of $ptr will swell or contract at 2015-08-20. Please affirm either Rise or Fall.
Context: date,open,high,low,close,adj-close,inc-5,inc-10,inc-15,inc-20,inc-25,inc-30
2015-08-06,0.0,0.4,-0.5,0.1,0.1,1.1,3.1,4.8,6.0,7.3,9.0
2015-08-07,1.0,1.3,-0.3,-1.1,-1.1,1.2,3.6,5.2,6.6,7.8,9.5
2015-08-10,-1.0,0.0,-1.1,2.1,2.1,-0.9,1.5,2.6,4.0,5.0,6.7
2015-08-11,-0.7,0.3,-1.1,-1.2,-1.2,0.1,2.2,3.3,4.7,5.7,7.4
2015-08-12,-1.2,0.2,-1.7,0.5,0.5,-0.3,0.8,2.3,3.8,4.9,6.3
2015-08-13,0.9,0.9,-0.1,0.0,0.0,-0.3,0.3,1.8,3.3,4.5,5.8
2015-08-14,-0.1,0.4,-0.4,-1.1,-1.1,0.9,0.9,2.5,3.9,5.2,6.4
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


Answer:+Fall