Scrutinize the data and tweets to envisage if the closing price of $ppl will swell or contract at 2015-08-21. 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
2015-08-07,-0.9,0.6,-1.7,0.8,0.8,-1.4,-2.2,-3.0,-3.2,-3.6,-4.4
2015-08-10,-0.3,0.8,-0.3,0.2,0.2,-1.2,-1.9,-2.9,-3.1,-3.4,-4.3
2015-08-11,-0.2,0.5,-0.9,0.7,0.7,-1.2,-2.2,-3.2,-3.6,-3.9,-4.7
2015-08-12,-2.1,0.1,-2.2,1.8,1.8,-2.1,-3.4,-4.5,-5.0,-5.4,-6.0
2015-08-13,-0.0,0.4,-1.1,-0.3,-0.3,-1.2,-2.6,-3.7,-4.5,-4.8,-5.4
2015-08-14,-0.6,0.2,-1.3,0.6,0.6,-1.2,-2.8,-3.8,-4.7,-5.1,-5.6
2015-08-17,-0.3,0.3,-0.9,0.7,0.7,-1.1,-2.9,-3.9,-5.0,-5.4,-5.9
2015-08-18,0.2,0.4,-0.4,-0.4,-0.4,-0.2,-1.9,-3.1,-4.2,-4.7,-5.2
2015-08-19,-0.6,0.4,-1.1,0.3,0.3,-0.3,-1.6,-2.9,-4.0,-4.7,-5.2
2015-08-20,-0.2,1.4,-0.5,-0.4,-0.4,0.2,-0.8,-2.1,-3.2,-4.0,-4.5

2015-08-07: ppl.to pembina pipeline corp. exchange$ppl.to $glw $tqqq $oas #ppl.to #stock #investing
2015-08-10: $ppl is rated buy, 6.7% upside by wall street analysts based on average ratings/targets  
2015-08-12: ppl corp receives “buy” rating from mkm partners $ppl 
Answer:
Scrutinize the data and tweets to envisage if the closing price of $ppl will swell or contract at 2015-08-21. 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
2015-08-07,-0.9,0.6,-1.7,0.8,0.8,-1.4,-2.2,-3.0,-3.2,-3.6,-4.4
2015-08-10,-0.3,0.8,-0.3,0.2,0.2,-1.2,-1.9,-2.9,-3.1,-3.4,-4.3
2015-08-11,-0.2,0.5,-0.9,0.7,0.7,-1.2,-2.2,-3.2,-3.6,-3.9,-4.7
2015-08-12,-2.1,0.1,-2.2,1.8,1.8,-2.1,-3.4,-4.5,-5.0,-5.4,-6.0
2015-08-13,-0.0,0.4,-1.1,-0.3,-0.3,-1.2,-2.6,-3.7,-4.5,-4.8,-5.4
2015-08-14,-0.6,0.2,-1.3,0.6,0.6,-1.2,-2.8,-3.8,-4.7,-5.1,-5.6
2015-08-17,-0.3,0.3,-0.9,0.7,0.7,-1.1,-2.9,-3.9,-5.0,-5.4,-5.9
2015-08-18,0.2,0.4,-0.4,-0.4,-0.4,-0.2,-1.9,-3.1,-4.2,-4.7,-5.2
2015-08-19,-0.6,0.4,-1.1,0.3,0.3,-0.3,-1.6,-2.9,-4.0,-4.7,-5.2
2015-08-20,-0.2,1.4,-0.5,-0.4,-0.4,0.2,-0.8,-2.1,-3.2,-4.0,-4.5

2015-08-07: ppl.to pembina pipeline corp. exchange$ppl.to $glw $tqqq $oas #ppl.to #stock #investing
2015-08-10: $ppl is rated buy, 6.7% upside by wall street analysts based on average ratings/targets  
2015-08-12: ppl corp receives “buy” rating from mkm partners $ppl 
Answer:+Fall