Scrutinize the data and tweets to envisage if the closing price of $c will swell or contract at 2017-08-21. 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
2017-08-07,0.1,0.3,-0.5,0.1,0.1,-0.2,-1.2,-2.2,-2.5,-2.4,-3.0
2017-08-08,0.2,1.4,-0.1,-0.2,-0.2,-0.1,-0.8,-1.7,-2.1,-2.1,-2.5
2017-08-09,-0.5,0.1,-0.7,-0.7,-0.7,0.4,0.0,-0.9,-1.4,-1.5,-1.6
2017-08-10,1.2,1.4,-0.1,-1.8,-1.8,1.9,1.8,1.0,0.4,0.3,0.3
2017-08-11,0.4,1.0,-0.3,-0.6,-0.6,1.9,2.4,1.8,1.1,0.9,0.9
2017-08-14,-0.4,0.4,-0.7,1.6,1.6,-0.1,0.7,0.3,-0.4,-0.7,-0.7
2017-08-15,0.9,1.5,-0.1,0.1,0.1,-0.5,0.4,0.2,-0.4,-0.8,-0.8
2017-08-16,0.6,1.0,-0.5,-0.4,-0.4,-0.3,0.6,0.6,0.1,-0.3,-0.4
2017-08-17,1.1,1.6,-0.1,-1.6,-1.6,1.2,2.0,2.2,1.8,1.3,1.2
2017-08-18,-0.3,1.2,-0.6,-0.0,-0.0,1.2,1.7,2.2,1.9,1.4,1.2

2017-08-07: rt AT_USER $goog $fdc remain to be cooperman's top 2 stocks. he is waiting to buy big banks $bac $c $jpm since he missed rally. |$goog $fdc remain to be cooperman's top 2 stocks. he is waiting to buy 
2017-08-08: rt AT_USER $c formed daily pps sell signal at persons pivot resistance on volume and rs divergence patten as covered in webinar htt¡­|don't miss our next free option trade.  sign up for our daily free
2017-08-09: rt AT_USER citigroup initiated by wells fargo &amp; company at outperform.  $c #c|how bank of america will reach $30 $bac AT_USER  $jpm $c $wfc|don't miss our next free option trade.  sign up for our 
2017-08-10: rt AT_USER open house this sat.and sun.12-4 8bd 4ba.duplex. #real estate #losangeles #airbnb #invest #richdadpoordad  $snap $c ht¡­|open house this sat.and sun.12-4 8bd 4ba.duplex. #real estate #losan
2017-08-11: $c and vanguard have increased stake in $amd |stelliam investment management lp sells 535,000 shares of citigroup inc. $c |stelliam investment management lp sells 535,000 shares of citigroup inc. $c |
2017-08-12: citigroup inc. $c shares sold by state street corp |harbor advisors llc has $299,000 position in citigroup inc. $c |don't miss our next free option trade.  sign up for our daily free trades at  $nvda 
2017-08-13: citigroup inc. $c shares bought by huntington national bank |6/ our lives r not n e ones game. memories r long. #millennials #generationx #mlb #nba #nfl $aapl $c $gs $googl¡­ |5/ &amp; repatriation of
2017-08-14: $c the only name they came after today in the fins. still their favorite. |achmea investment management b.v. purchases shares of 189,001 citigroup inc. $c |citigroup inc. $c shares bought by community
2017-08-15: rt AT_USER kamakura expected default rate among all public financial institutions with bonds traded in us market up sharply to 16.90%¡­|kamakura expected default rate among all public financial instit
2017-08-16: $c  showing an excellent breakout setup pattern. check  for a possible trade suggestion |other people's money: the real business of finance:  #finance #business $spy $c $gs $wfc $bac|don't miss our ne
2017-08-17: impressive setup for  $c on  #vaccines #androiddev |price returns vs expected daily move $v $ma $jpm $c $wfc $gs $ms $usb $bac $db $apo $psec  |$c volatility means money for banks baby|all the big ban
2017-08-18:  biotech traders need to see this crucial tool for trading stocks! $aprn $c $rad $cag|investing in jpmorgan for the long term  $bac $c $gs $ms $wfc $xlf $jpm|rt AT_USER is really happening ?? $bvtk $a
2017-08-19: don't miss our next free option trade.  sign up for our daily free trades at  $nvda $tsla $gs $c $wfc $googl $fb|rt AT_USER which proves p.trump is an extension of obama.both are followers of $gs, $c,
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Answer:
Fall