Scrutinize the data and tweets to envisage if the closing price of $mrk will swell or contract at 2017-09-22. 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
2017-09-08,-0.4,0.4,-0.5,-0.1,-0.1,-0.4,-1.0,-1.8,-2.0,-2.2,-1.9
2017-09-11,-0.3,0.3,-0.7,1.3,1.3,-1.3,-2.0,-2.7,-3.1,-3.3,-3.2
2017-09-12,-0.5,0.2,-0.5,0.5,0.5,-1.3,-2.1,-2.8,-3.4,-3.6,-3.6
2017-09-13,-0.1,0.2,-0.2,-0.0,-0.0,-0.8,-1.7,-2.5,-3.2,-3.4,-3.5
2017-09-14,-1.7,0.1,-1.8,1.0,1.8,-1.8,-2.9,-3.7,-4.5,-4.9,-5.0
2017-09-15,0.0,0.3,-0.6,0.1,0.1,-1.2,-2.6,-3.4,-4.2,-4.6,-4.9
2017-09-18,0.0,0.6,-0.3,-0.3,-0.3,-0.5,-1.9,-2.8,-3.6,-4.2,-4.5
2017-09-19,0.1,0.3,-0.4,-0.1,-0.1,-0.2,-1.4,-2.4,-3.2,-3.9,-4.2
2017-09-20,0.4,0.8,-0.9,-0.2,-0.2,0.3,-0.9,-1.9,-2.7,-3.4,-3.8
2017-09-21,0.4,0.5,-0.1,-0.3,-0.3,0.5,-0.3,-1.3,-2.1,-2.9,-3.3

2017-09-08: eow paper trade updates: resistance at $160 is holding for $cost and $mrk hovering around $64 - still early though - plenty of time to fail!|do you see $agn stock trading hault today as a stock manipu
2017-09-09: AT_USER AT_USER AT_USER life saving tech developed by $mrk, $pfe, $jnj, $gild, $mon, $agu, and $de r¡­ |rt AT_USER zepatier ex-us sales continuing to climb ($261m) as $mrk aggressive discounting is ta
2017-09-10: merck &amp; company, inc. $mrk receives $69.40 average price target from brokerages |in atlanta, i hope my roof &amp; electricity holds out! $twtr $aapl $brk $iep $amzn $goog $agn $myl $mrk $f $ba $aa
2017-09-11: big call buyers  $gt $pgr $ati $home $adm $paa $twlo $amd $bac $oc $tgt $mrk $jpm $kgc $shpg $tlt $eem $xlf|rt AT_USER winners in melanoma $bmy $arry $nvs $mrk $incy AT_USER |AT_USER thxfor follow! vi
2017-09-12: $qqq $tqqq $mrk $amzn $goog  - do you like these recommendations from marc m |big call buyers  $nov $afl $icpt $snap $do $cvs $expr $payx $swn $vnet $abt $mrk $kr $ual $fast $lite $mdlz $xrt|no debt b
2017-09-13: shkreli gets maximum security prison! $vrx $mnk $goog $ko $twtr $fold $amzn $ko $pep $jazz $amgn $myl $mrk $crm¡­ |rt AT_USER event ¨c the next showdown in first-line lung cancer  $rhhby $bmy $mrk $az
2017-09-14: traders sell merck &amp; company, inc. $mrk on strength $mrk |stocks end mixed; 3 chip-equipment firms with bullish charts:  $utx $pfe $mrk $orcl $tsla¡­ |stocks end mixed; 3 chip-equipment firms with
2017-09-15: $djia wkly best performance $dwdp $intc $ba $vz $mmm $pfe $gs $mrk $jpm worst $mcd $hd $ge $pg $ko $unh $aapl $v¡­ |midday most tweeted big caps, check out gambiste top 10: $wfc $jnj $wmt $wba $vz $mr
2017-09-16: the problem? $ko is in their sight $ko $pep $ibm $msft $aapl $brk $iep $tst $amzn $f $ba $aa $goog $myl $mrk $dis¡­ |seeking alpha $ko dividends take 2! $pep $ibm $msft $aapl $brk $iep $tst $amzn $f $
2017-09-17: pwc's assurance biz w/lower growth $agn $tst $hlf $brk $iep $pep $crm $orcl $fb $msft $myl $mrk $twtr $ba $aa $f¡­ |champions! $vrx $agn $myl $mrk $ko $pep $ibm $dis $crm $cmg $f $goog $hlf $brk $iep 
2017-09-18: $bmy $mrk #stocks |#merck fda slaps enrollment hold on 2 tecentriq studies after keytruda myeloma trial deaths. read more:  $mrk|evening most tweeted big caps, check out gambiste top 10: $pm $pg $mrk 
2017-09-19: rt AT_USER i called $bmy $halo 21 mos ago - i don't think it will take 21 months this time-but $azn will bring imfinzi to halo for e¡­| &lt; review of this fantastic traders teaching service!! try it 
2017-09-20: rt AT_USER got to love the simplicity!  #nationalpepperonipizzaday #wednesdaywisdom vista partners #investing |possible 'best-in-class' alzheimer's drug candidate offers 'disruptive' potential:  $pmn.
2017-09-21: rt AT_USER possible 'best-in-class' alzheimer's drug candidate offers 'disruptive' potential:  $pmn.ca $bii¡­|european regulators on thursday granted market approval for $mrk kgaa and pfizer¡¯s immuno
Answer:
Fall