Analyze the information and social media posts to determine if the closing price of $mrk will ascend or descend at 2017-07-17. Please respond with either Rise or Fall.
Context: date,open,high,low,close,adj-close,inc-5,inc-10,inc-15,inc-20,inc-25,inc-30
2017-06-30,0.6,1.0,-0.1,-0.4,-0.4,1.4,1.6,0.7,0.4,0.5,0.4
2017-07-03,-0.7,0.6,-0.7,0.3,0.3,0.6,1.4,0.4,0.1,0.2,0.1
2017-07-05,0.5,1.0,-0.4,-0.2,-0.2,0.4,1.5,0.7,0.2,0.3,0.3
2017-07-06,1.1,1.3,-0.2,-1.7,-1.7,1.4,2.8,2.3,1.9,1.9,2.0
2017-07-07,0.1,0.3,-0.6,0.1,0.1,0.9,2.3,2.2,1.8,1.7,1.8
2017-07-10,0.9,0.9,-0.4,-0.5,-0.5,1.1,2.3,2.8,2.3,2.1,2.3
2017-07-11,0.8,1.0,-0.2,-0.8,-0.8,1.2,2.5,3.4,2.9,2.8,2.9
2017-07-12,-0.2,0.6,-0.2,0.7,0.7,0.1,1.3,2.5,2.2,2.0,2.1
2017-07-13,-0.2,0.2,-1.0,0.2,0.2,-0.1,0.8,2.1,2.0,1.8,1.9
2017-07-14,-0.2,0.5,-0.3,0.3,0.3,-0.4,0.3,1.5,1.7,1.5,1.5

2017-06-30: rt AT_USER this is a remarkable statistic: ~500 clinical trials of keytruda. $mrk essentially betting everything on this one drug. wow.¡­|rt AT_USER s&amp;p, dow finish week slightly lower as nasdaq f
2017-07-01: commented on for aralez, time to turn it around  $azn $mrk $arlz|rt AT_USER AT_USER thanks for follow! see vista partners #investingforgrowth #biotech #healthcare  $¡­|500+% in valeant! why $bmy? redi
2017-07-02: grade school? $vrx $agn $myl $mrk $twtr $jazz $ko $pep $iep $brk $aapl $amzn $goog $nflx $aapl $ibm $msft $exel¡­ |rt AT_USER AT_USER thanks for follow! see vista partners #investingforlife #technolog
2017-07-03: rt AT_USER it's early but seeing some huge opening imbalances: $mrk -235k, $pfe -427k, $vz -214k, $xom -177k, $cvx -142k, $cat -69k¡­|3 top high-yield pharmaceutical stocks to buy now AT_USER #stocks 
2017-07-04: merck &amp; company $mrk receiving somewhat favorable media coverage, study shows |merck &amp; company $mrk receiving somewhat favorable media coverage, study shows |#icymi $mrk, in a surprise result,
2017-07-05: rt AT_USER $mrk: fda has determined that now the risks of keytruda plus pomalidomide or lenalidomide outweigh any potential benefit¡­|rt AT_USER can merck knock glaxo off its hiv perch? maybe so, one 
2017-07-06: rt AT_USER fda halts #merck blood cancer clinical trials after patient deaths. read more:  $mrk|AT_USER thanks for follow! see vista partners #investingforlife #healthcare #biotech  $pfe¡­ |rt AT_USER
2017-07-07: the major growth drivers for astrazeneca in 2017  $azn $vxus $rhhby $mrk|rx reading: $celg expands oncology pipeline; $rhhby, $ptct reveal topline results; fda hits $mrk with clinical holds |$mrk sec 
2017-07-08:  &lt;&lt; i¡¯ve reviewed the best stock alert services so you don¡¯t have to! $srpt $fb $myl $mrk|.AT_USER places 3 trials of #keytruda for #multiplemyeloma on hold due to patient deaths, $mrk announc
2017-07-09: rt AT_USER market cap top 25 pharma biotech $ibb $jnj $mrk $celg $gild $bmy $incy $spy |merck &amp; company, inc. $mrk given a $65.00 price target at citigroup inc. | &lt;&lt; the best stock picking s
2017-07-10: #cybersecurity #stocks gain as #mondelez loses sales to #petya    $ftnt $mant $symc $fdx $mrk $mdlz $cuda $panw $feye|dow #stocks trend $msft $cat $intc $mrk $dd $ba $csco $aapl $ibm $mcd $jpm $dis $u
2017-07-11:   millionaire trader lets you see his watchlist for free.! $mrk $sq $soxx|biggest cancer drugs of 2022 #stocks $pfe, $mrk, $jnj, $bmy, $celg, $abbv |rt AT_USER $auph getting acquired by $mrk this week
2017-07-12: $mrk call sweepers showed up late, maybe be something up tomorrow, keep a eye on this one. |$rhhby to acquire $cytr?! $pfe $jnj $mrk $gsk $shpg  $dxtr $mrk $ceru $msdi $spex $clsn $dxtr $dcth |$rhhby 
2017-07-13: on watch $mrk |5 things for #pharma #marketers to know: thu., july 13 $azn $teva #fda $fold #diabetes $mrk #raredisease $agn¡­ |merck &amp; company $mrk given daily news sentiment score of 0.07 |5 dru
2017-07-14: rt AT_USER amgen receives fda approval for blincyto  $mrk $amgn |bollard group llc has $5.48 million position in merck &amp; company, inc. $mrk |$pfe $jnj $bmy $mrk investing with options: $pfe $jnj b
2017-07-15: $djia wkly best performing $msft $aapl $dd $v $ba $ge $intc $cat $dis worst $jpm $trv $mcd $pg $unh $mrk $nke $jnj¡­ | &lt;&lt; the best stock picking services reviewed! $vrx $agn $myl $mrk $ko |merck
2017-07-16: $mrk max pain is 63.00 for maturity 07/21/2017. prev close = 63.06.   |$gild currently offers a 18% fcf yield, way above other pharma stocks #valueinvesting #finance #trading $pfe $mrk¡­ | looks like 
Answer:
Fall