Scrutinize the data and tweets to envisage if the closing price of $ibm will swell or contract at 2017-04-21. 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
2017-04-06,0.6,0.6,-0.1,-0.2,-0.2,0.7,0.8,1.0,1.4,1.9,2.4
2017-04-07,-0.0,0.5,-0.5,-0.2,-0.2,0.7,0.9,1.1,1.4,1.9,2.4
2017-04-10,0.8,0.8,-0.1,-0.5,-0.5,0.8,1.3,1.4,1.8,2.3,2.8
2017-04-11,0.0,0.4,-0.9,-0.4,-0.4,0.7,1.4,1.7,2.0,2.4,3.0
2017-04-12,0.2,0.3,-0.4,0.0,0.0,0.4,1.2,1.5,1.8,2.1,2.7
2017-04-13,0.2,1.1,0.0,-0.7,-0.7,0.8,1.6,1.9,2.3,2.6,3.2
2017-04-17,-0.8,0.1,-0.9,0.9,0.9,-0.3,0.5,0.9,1.2,1.5,2.1
2017-04-18,0.4,1.0,-0.1,-0.6,-0.6,0.2,0.9,1.4,1.7,2.0,2.5
2017-04-19,0.0,0.6,-1.3,-4.9,-4.9,4.3,5.3,6.1,6.5,7.0,7.4
2017-04-20,-0.6,0.1,-1.1,0.4,0.4,2.9,4.2,5.2,5.7,6.2,6.6

2017-04-06: $ibm toxic work enviro: katy huberty amit daryanani no clue on how employees hate ginni + her 6 layers of vp parasi¡­ |$ibm ginni, u authorize this? board loves deadly travel agent press "how to win i
2017-04-07: rt AT_USER is now a good time to buy $jpm $esrx $bac $ibm $mpc  $teva $bmy $abbv $hot $v $mdt $axp $dow #ces2¡­|$ibm busy weekend deadly travel agent harriet green minions + oligarch fans working medi
2017-04-08: international business machines corp. $ibm getting somewhat favorable press coverage, analysis finds |international business machines corp. $ibm getting somewhat favorable press coverage, analysis fin
2017-04-09: $ibm massive fail. cant update board for hours and then feed goes down with two holes left |international business machines corp. $ibm lowered to sell at vetr inc.  #acn|international business machine
2017-04-10: international business machines corp. $ibm lowered to ¡°sell¡± at vetr inc. |international business machines corp. $ibm lowered to ¡°sell¡± at vetr inc.  #acn|international business machines corp. $ib
2017-04-11: rt AT_USER 3 stocks to buy with dividends yielding more than 3% AT_USER $ibm |scan results - stochastic buy signal today: $ghl $pkx $wfc $rpm $ibm $manh $virt $camp $gg $viv ... |veeva systems: thank 
2017-04-12: rt AT_USER ibm is going all in on blockchain for trade finance $ibm  |ai explains why $ibm is wedded to cloud, watson, &amp; blockchain    #interconnect|breaking $ibm apparent + likely suicide yesterd
2017-04-13: rt AT_USER ibm is going all in on blockchain for trade finance $ibm  |$ibm the astonishing opportunity in ibm options and earnings  |track news with various time frames for $djia under one watchlist $
2017-04-14: is now a good time to buy $jpm $esrx $bac $ibm $mpc  $teva $bmy $abbv $hot $v $mdt $axp $dow #ces2018 #ai|rt AT_USER week in review: how trump's policies moved stocks $gm $ibm $wmt $tsla $blk $bx $bac
2017-04-15: rt AT_USER #earnings $bac $nflx $gs $unh $jnj $ibm $ge $qcom $vz $schw $ms $cuda $bx $pgr $v $mtb $hog $abt $ual $cma $rf $usb  |rt AT_USER #earnings $bac $nflx $gs $unh $jnj $ibm $ge $qcom $vz $schw 
2017-04-16: rt AT_USER now available: earnings snapshot previews/trades 4-17-17 $nflx, $ibm, $ebay, $slb, $hon |rt AT_USER #earnings $bac $nflx $gs $unh $jnj $ibm $ge $qcom $vz $schw $ms $cuda $bx $pgr $v $mtb $h
2017-04-17: investors are giving ibm too much credit: #earningsseason $ibm |rt AT_USER $gs $bac $jnj $ibm notable earning reports tomorrow |$gs $bac $jnj $ibm notable earning reports tomorrow |rt AT_USER #earning
2017-04-18: solid chance $ibm makes up this drop within a week. thank financial engineering enabled by low rates.|rt AT_USER $ibm announces #cloud revenues of $14.6 billion over last 12 months. see why ibm's bets
2017-04-19: AT_USER also thinking that with the bad $gs $ibm reports and other negatives bears really couldn't get it done s¡­ |AT_USER $ibm  &lt;$150 buffett in for buybacks/divies which r $ needed elsewhere whe
2017-04-20: hello anyone awake AT_USER how about $ibm stealing $ 13+ mlln from fannie mae thru ginni's seterus fraud unit? |rt AT_USER watson is short $ibm|rt AT_USER $ibm wins chart of the day ...i dont even tra
Answer:
Fall