Analyze the information and social media posts to determine if the closing price of $mrk will ascend or descend at 2017-06-19. 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
2017-06-05,0.4,0.5,-0.6,-0.6,-0.6,0.1,-0.2,-0.9,-1.1,-1.5,-1.9
2017-06-06,0.5,0.6,-0.3,-0.6,-0.6,0.7,0.5,-0.2,-0.5,-0.7,-1.2
2017-06-07,0.8,0.9,-0.1,-0.9,-0.9,1.3,1.4,0.8,0.5,0.3,-0.2
2017-06-08,1.4,1.7,-0.6,-1.3,-1.3,2.0,2.5,2.2,1.8,1.6,1.2
2017-06-09,-1.8,0.1,-1.9,1.9,1.9,-0.2,0.5,0.4,-0.1,-0.2,-0.5
2017-06-12,0.0,0.5,-0.3,0.0,0.0,-0.4,0.4,0.4,0.0,-0.2,-0.4
2017-06-13,0.7,0.9,-0.4,-1.7,-1.0,0.3,1.3,1.4,1.1,0.9,0.7
2017-06-14,-0.6,0.4,-0.6,0.2,0.2,0.1,0.9,1.2,0.9,0.7,0.6
2017-06-15,0.2,0.4,-0.5,-0.3,-0.3,0.5,0.9,1.3,1.2,1.0,0.8
2017-06-16,0.5,1.2,-0.4,-0.3,-0.3,0.6,1.0,1.5,1.6,1.3,1.2

2017-06-05: $incy, $mrk provide updates on their cancer combo  #asco17|rt AT_USER keytruda first-line treatment meets primary endpoint in study of advanced bladder cancer patients |rt AT_USER keytruda first-line 
2017-06-06: rt AT_USER bms' opdivo, merck's keytruda lead their class in cancer vaccine combo studies: report  $bmy $mrk|rt AT_USER drive home what an amazing job frazier and perlmutter have done -- and how lucky
2017-06-07: rt AT_USER $mrk ceo: don¡¯t underestimate merck's vaccine business,¡¯. humbled by the great endorsement of AT_USER products  |rt AT_USER with asco data tallied, bristol-myers loses ground to merck in 
2017-06-08: AT_USER thanks for follow! see vista partners #investing #dow30 #healthcare  $jnj $mrk¡­ |first valeant now $teva. the common denominator? #allergan! who wants to get into bed w/ allergan next? $agn $
2017-06-09: rt AT_USER AT_USER AT_USER $kite $juno $amgn $nvs $bmy $mrk #dcvax will disrupt all. $nwbo $blue $celg $sgen $loxo #pem¡­|rt AT_USER AT_USER AT_USER $kite $juno $amgn $nvs $bmy $mrk #dcvax will disrup
2017-06-10: loxo nudges ahead of ignyta with tumor-agnostic therapy  $mrk $rxdx $arry $loxo|rt AT_USER my "covfefe"..... conscientiousness $vrx $agn $myl $mrk $twtr $aapl $ko $pep $brk $iep $jnj $goog $googl $crm
2017-06-11: i continue to be very long in healthcare: $bmy $mrk $alxn #bodypositive #bopo #bodyacceptance #effyourbeautystandard |AT_USER AT_USER AT_USER mab  whether anti-pd-1 or anti-pdl1 is dependent on target
2017-06-12: i'm glad i'm not the only one that does this for the last bit of toothepaste! $vrx $agn $myl $mrk $ko $pep $twtr¡­ |unicorn bay rating for $mrk is 2.94 out of 5. |analysts¡¯ weekly ratings changes for
2017-06-13: dow jones analysis video - $djia $dia $sdow  $xom $ge $gs $mrk $pfe $bmy $vz  #stockmarket #stocks #trading #dowjones|dow jones analysis video - $djia $dia $sdow  $xom $ge $gs $mrk $pfe $bmy $vz  #sto
2017-06-14: merck &amp; co. (mrk) presents at asco 2017 (oncology event) - slideshow  $mrk |i hope to get a job soon cause i sure do miss playing golf :-) try to beat me! $vrx $agn $myl $mrk $twtr $aapl $brk¡­ |r
2017-06-15: rt AT_USER this gif gets me! $amzn $vrx $agn $myl $mrk $twtr $ko $pep $aapl $brk $iep $ibm $crm $crm $shak $cake $ba $aa $dal $prgo $j¡­|#merck &amp; co. becomes member of the worldwide innovative net
2017-06-16: $myo regardless they going to get bought out hearing they have a very impressive board. major nyse drug companies. $mrk $pfe $bmy|rt AT_USER $djia wkly best performing $ge $trv $ba $mmm $hd $jnj $cvx 
2017-06-17: rt AT_USER upcoming pdufa/fda advisory committee meeting/351(k) dates $mrk big pdufa next week $ocul $alks $ibb $srpt $pbyi $ptla |abbvie $abbv ltm ebitda multiple trading below majority of peers: $bm
2017-06-18: rt AT_USER dogs of the dow underperformance gap widening $ba $cat $cvx $ibm $ko $mrk $pfe $vz $xom $csco |dogs of the dow underperformance gap widening $ba $cat $cvx $ibm $ko $mrk $pfe $vz $xom $csco 
Answer:
Rise