Examine the data and tweets to deduce if the closing price of $mrk will boost or lower at 2017-04-13. Kindly confirm either Rise or Fall.
Context: date,open,high,low,close,adj-close,inc-5,inc-10,inc-15,inc-20,inc-25,inc-30
2017-03-30,0.1,0.4,-0.2,-0.3,-0.3,-0.1,0.2,0.6,1.4,1.7,1.9
2017-03-31,-0.4,0.1,-0.5,0.1,0.1,-0.2,-0.0,0.3,1.0,1.5,1.7
2017-04-03,-0.1,0.4,-0.4,-0.1,-0.1,0.0,-0.0,0.4,0.9,1.5,1.7
2017-04-04,-0.1,0.2,-0.5,0.3,0.3,-0.2,-0.4,0.0,0.5,1.0,1.3
2017-04-05,0.2,0.9,-0.1,-0.2,-0.2,-0.0,-0.2,0.0,0.5,1.1,1.4
2017-04-06,0.4,1.2,-0.1,-0.5,-0.5,0.4,0.3,0.5,0.8,1.4,1.8
2017-04-07,0.2,0.3,-0.3,-0.2,-0.2,0.5,0.5,0.6,0.9,1.4,1.8
2017-04-10,1.2,1.2,-0.0,-0.9,-0.9,1.1,1.3,1.3,1.7,2.1,2.6
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

2017-03-30: #merck, avillion ink development deal for nanobody psoriasis treatment. read more:  $mrk|s&amp;p100 #stocks trend $gd $msft $cat $fdx $pcln $intc $ups $foxa $mrk $cmcsa $hal $dow $dd $t $emr $usb $all
2017-03-31: rt AT_USER $incy 28 b mcap if epacadostat is able to realize a fraction of this market potential incy shares could have significant ups¡­|rt AT_USER you can bet ido/pd-1 will be a theme at #aacr17 (ne
2017-04-01: rt AT_USER $mrk wants lawsuit in pa state court over shingles vaccine #zostavax moved to federal court  |rt AT_USER $mrk wants lawsuit in pa state court over shingles vaccine #zostavax moved to federa
2017-04-02: 5 deadliest diseases in the u.s. -- and the top drugs potentially #stocks $mrk, $bmy, $alny, $azn, $biib, $mdco |upcoming fda calendar: $mrus $nvs $once $xbit $kpti $nlnk $gsk $mrk $sny $nbix |AT_USER
2017-04-03: AT_USER AT_USER note $mrk 2 yr exclusivity was limited to pivotal trials in adv/met melanoma. nothing circumvented with $bmy deal.|rt AT_USER $bmy makes survival in melanoma combo trial. $mrk, #aacr17
2017-04-04: rt AT_USER first #fda approved drug for rare skin #cancer called merkel cell carcinoma #pdl1 AT_USER AT_USER $pfe $mrk... |rt AT_USER first #fda approved drug for rare skin #cancer called merkel cell 
2017-04-05: rt AT_USER get ready for an explosive run $vdrm the next $owcp $cnbx $usrm $axim $cara $zyne $gwph $pfe $mrk $bmy #tradeideas htt¡­|rt AT_USER pepsi's ceo just had to go there! $vrx $agn $myl $mrk $jn
2017-04-06: rt AT_USER how uncoupling opdivo and yervoy could favour keytruda, via AT_USER  #aacr17 $bmy $mrk|rt AT_USER most drug makers lack evidence their access to medicines program actually work..  #pharma $
2017-04-07: merck &amp; co., inc. $mrk rating lowered to reduce at hsbc holdings plc |04/07/17 volume leader #84 - mrk 7,721,053 merck &amp; company $mrk 63.13 -0.11 -0.17% high today of 63.33 day low |insider se
2017-04-08: btw, i'm single &amp; available!  $vrx $agn $myl $ko $pep $mrk $jnj $aapl $tsla $twtr $brk $hf $iep $prgo $fb $hd $cscma $googl $ibm $amzn $crm|i sure do miss the golf course! beautiful day too! oooou
2017-04-09: rt AT_USER $mrk merck &amp; co. to present new data from hcv development programs |rx reading: $incy, $mrk expand their collaboration; gottlieb gets questioned; $acor cuts staff by 20% |rt AT_USER $mr
2017-04-10: dr. john h. noseworthy nominated to stand for election to #merck board of directors. read more:  $mrk|brief-#merck says board of directors to have 13 members. read more:  $mrk|benzinga: cardiovascular
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
Answer:
Fall