Scrutinize the data and tweets to envisage if the closing price of $mrk will swell or contract at 2017-04-26. 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
2017-04-11,-0.1,0.3,-0.6,0.0,0.0,0.7,1.1,1.1,1.5,1.9,2.4
2017-04-12,-1.1,0.3,-1.2,0.8,0.8,-0.2,0.3,0.3,0.6,1.0,1.5
2017-04-13,0.3,0.6,-0.1,-0.7,-0.7,0.3,0.8,1.0,1.2,1.5,2.1
2017-04-17,-0.1,0.1,-0.7,0.3,0.3,-0.1,0.4,0.6,0.8,1.1,1.6
2017-04-18,0.3,0.3,-0.4,-0.8,-0.8,0.6,1.1,1.4,1.5,1.8,2.3
2017-04-19,-0.6,0.0,-1.0,0.6,0.6,0.1,0.3,0.7,0.8,1.1,1.5
2017-04-20,0.2,0.3,-0.5,-0.1,-0.1,0.0,0.3,0.7,0.9,1.1,1.5
2017-04-21,0.8,1.2,-0.0,-1.1,-1.1,0.9,1.2,1.6,1.8,2.1,2.4
2017-04-24,0.6,0.6,-0.2,0.4,0.4,0.3,0.6,1.1,1.3,1.5,1.8
2017-04-25,0.3,1.0,-0.1,0.3,0.3,0.0,0.3,0.7,1.0,1.2,1.5

2017-04-11: rt AT_USER merck¡¯s frazier gets his first raise, but total package shrinks as sales stall  $mrk|merck¡¯s frazier gets his first raise, but total package shrinks as sales stall  $mrk|or did i see the 
2017-04-12: rt AT_USER echo-202 epacadostat + pembro has added phase 2 expansion cohorts in gastric and hepatocellular carcinoma $incy $mrk |$mrk is in stochastic oversold  winning 60.56% in the past. |04/12/17 v
2017-04-13: rt AT_USER AT_USER AT_USER $ziop has in 30s but outsourced to $xon $mrk kgaa|AT_USER AT_USER $ziop has in 30s but outsourced to $xon $mrk kgaa|rt AT_USER first #fda approved drug for rare skin #cancer
2017-04-14: rt AT_USER  teaches #howtoperfect your #socialmedia #presence with #datascience $mrk $cmcsa $txn $dis $aig #b¡­|cowen and company reaffirms ¡°market perform¡± rating for merck &amp; co., inc. $mrk |#n
2017-04-15: it's a terrible things being poor &amp; at the mercy of others! try it! AT_USER $ko $pep $myl $mrk $aapl $twtr $aapl $brk $iep $googl|rt AT_USER .AT_USER here it is! why democrats are taking over atla
2017-04-16: AT_USER thanks for follow! see vista partners #worldnews commentary #investing #dow30¡­ |AT_USER could you run a valuation on $nwbo? phase 3 readouts soon and looks incredibly undervalued. possib¡­ |h
2017-04-17: merck &amp; co. $mrk receiving somewhat positive news coverage, analysis shows |merck &amp; co. $mrk receiving somewhat positive news coverage, analysis shows |merck &amp; co. $mrk receiving somewhat 
2017-04-18: rt AT_USER $agen recent articles suggest $gsk's #shingles vaccine may compete with $mrk's #zostavax. $gsk will capture all of the $4b¡­|4 healthcare stocks that are starting to look sick  $jnj $mrk $c
2017-04-19: in #merck video, woman says a cure is the greatest invention . read more:  $mrk|#breaking bristol-myers 'holding up better,' but dow's merck still gouging share $bmy $mrk  |better buy: #merck &amp; co
2017-04-20: AT_USER AT_USER $bmy and $mrk waiting on topline data in coming weeks from $nwbo  like $cpxx traders wil¡­ |rt AT_USER merck leads rivals in novel drug approvals  $mrk $azn $nvs $sny |AT_USER high cha
2017-04-21: rt AT_USER $mrk says pricing of remicade biosimilar will be announced closer to launch - following 180-day notice period |$atra enters into clinical trial collaboration agreement with merck $mrk|rt AT
2017-04-22: rt AT_USER new report halves the number of people infected with hepatitis c worldwide | science $gild $bmy $mrk $abbv $rgls |rt AT_USER upcoming pdufa dates $mrk $ibb $gild $rdus $ocul |p/s ratios of 
2017-04-23: rt AT_USER AT_USER AT_USER AT_USER AT_USER AT_USER AT_USER what about $nwbo AT_USER phase 3 brain cancer tr¡­|rt AT_USER 3 things in biotech you should learn today: april 22, 2017  $bgne $bmy $gild $m
2017-04-24: $bti.v makes a great hire at the ceo position. expect more partnerships to follow. $bmy $mrk $nvs $biib |rt AT_USER samsung biosim nod sets j&amp;j's remicade up for tough fight with merck and pfizer 
2017-04-25: $gild $mrk |rt AT_USER $djia dly best performing $cat $mcd $dd $gs $dis $unh $jpm $ba $xom $cvx worst $vz $ko $ge $ibm $nke $pfe $axp $mrk $v #ichi¡­|5 things for #pharma #marketers to know:tues, apr 
Answer:
Rise