Analyze the information and social media posts to determine if the closing price of $mrk will ascend or descend at 2017-05-05. 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
2017-04-21,0.8,1.2,-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
2017-04-26,-0.1,0.3,-0.4,0.6,0.6,-0.6,-0.3,-0.1,0.3,0.4,0.7
2017-04-27,0.3,0.5,-0.2,-0.2,-0.2,-0.4,-0.2,0.0,0.4,0.6,0.8
2017-04-28,0.4,0.5,-0.3,-0.4,-0.4,0.1,0.1,0.3,0.7,0.9,1.1
2017-05-01,-0.2,0.2,-0.4,0.1,0.1,0.1,-0.0,0.2,0.5,0.8,1.0
2017-05-02,-0.3,0.9,-0.6,0.5,0.5,-0.3,-0.4,-0.3,-0.0,0.2,0.4
2017-05-03,-1.8,0.1,-2.0,1.5,1.5,-1.4,-1.7,-1.7,-1.5,-1.2,-1.1
2017-05-04,0.5,0.8,-0.3,-0.4,-0.4,-0.8,-1.2,-1.2,-1.1,-0.8,-0.7

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 
2017-04-26: rt AT_USER AT_USER AT_USER meg i cover $celg $bmy $mrk $juno in my upcoming #immunooncology article AT_USER after toplin¡­|unusual option activity alert: $nsc 55x average daily volume, $kmx 10x, $cmg 
2017-04-27: stocks with #fda catalysts for may: $pbyi $mrk $txmd $nvs $nvo.  |brokerages expect merck &amp; co., inc. $mrk to announce $0.83 earnings per share |rt AT_USER a refreshing voice at bristol-myers squi
2017-04-28:  teaches #howtoperfect your #socialmedia #presence with #datascience $mrk $cmcsa $txn $dis $aig #blessed|rt AT_USER  teaches #howtoperfect your #socialmedia #presence with #datascience $mrk $cmcsa $tx
2017-04-29: i think i may need to move to louisiana! any jobs in luling? AT_USER $ko $pep $vrx $agn $twtr $myl $mrk $hlf $brk $iep $jnj $aapl $fb $hd $|$mrk gotta hold $62 |brokerages anticipate merck &amp; co., 
2017-04-30: never forget:  $bmy beats $gild, $mrk to key approvals in china, europe | stock news &amp; stock market analysis - ibd |icymi:  $bmy beats $gild, $mrk to key approvals in china, europe | stock news &a
2017-05-01: earnings-reaction to watch tuesday $bp, $gild, $cigi, $feye, $eca, $taho, $shpg, $czr, $oclr, $kgc, $fts, $mrk, $noa |rt AT_USER notable companies reporting before tomorrow's open $pfe $mrk $mo $ma $b
2017-05-02: rt AT_USER a closing word from ken frazier on our 1q financial results. $mrk |rt AT_USER $mrk's cancer sales soar in white-hot market |rt AT_USER immunotherapy crowds bladder cancer space  $azn $rhhby
2017-05-03: #merck investors gaining confidence, stock closes higher. read more:  $mrk|rt AT_USER a closing word from ken frazier on our 1q financial results. $mrk |rt AT_USER AT_USER buyout target $nwbo topline 
2017-05-04: rt AT_USER cs top pics big pharma $mrk $agn $lly $pfe $bmy $abbv |cs top pics big pharma $mrk $agn $lly $pfe $bmy $abbv |lots of stock trading action today: amd, ma, mrk, coh &amp; more  $coh $mrk $am
Answer:
Rise