Utilize the data and tweets at hand to foresee if the closing price of $mrk will elevate or diminish at 2017-08-08. Only answer with Rise or Fall.
Context: date,open,high,low,close,adj-close,inc-5,inc-10,inc-15,inc-20,inc-25,inc-30
2017-07-25,0.8,1.0,-0.2,-0.3,-0.3,0.4,0.5,0.8,1.5,2.2,2.1
2017-07-26,0.8,0.9,-0.1,-0.9,-0.9,1.1,1.3,1.4,2.1,3.0,3.0
2017-07-27,-0.0,1.4,-1.4,3.1,3.1,-1.7,-1.6,-1.5,-1.0,-0.2,-0.1
2017-07-28,-0.5,0.4,-1.4,0.7,0.7,-1.9,-2.1,-2.1,-1.7,-0.9,-0.7
2017-07-31,0.6,0.7,-0.6,-0.4,-0.4,-1.1,-1.5,-1.6,-1.4,-0.7,-0.3
2017-08-01,0.2,0.5,-0.2,0.1,0.1,-0.7,-1.4,-1.5,-1.5,-0.9,-0.3
2017-08-02,0.8,0.8,-0.4,-0.8,-0.8,0.6,-0.5,-0.7,-0.8,-0.3,0.4
2017-08-03,-0.5,0.3,-0.5,0.1,0.1,0.4,-0.5,-0.8,-0.9,-0.5,0.1
2017-08-04,0.8,0.9,-0.3,-0.7,-0.7,0.7,0.2,-0.1,-0.2,0.0,0.7
2017-08-07,0.2,0.4,-0.3,-0.4,-0.4,0.8,0.7,0.3,0.2,0.4,0.9

2017-07-25: rt AT_USER AT_USER AT_USER everybody in t-cell immunotherapies should be interested in $afmd for its nk-cell engagers imo - afm¡­|$mrk's keytruda misses in head and neck cancer |no apples &amp; in you
2017-07-26: rt AT_USER merck &amp; co. $mrk plans to file nda for hiv treatment doravirine based on phase iii results  |the surprising history behind $mrk's cancer blockbuster:  by dshaywitz  by forbeshealth|$fb 
2017-07-27: rt AT_USER let¡¯s all bookmark tonight¡¯s bio-twitter $mrk apologia for keytruda failure when the confirmatory study of $srpt etepli¡­|rt AT_USER oh the irony. $mrk partners its parpi (mk2512) to $tsr
2017-07-28: invenra signs on with merck in antibody discovery partnership $mrk  AT_USER|#amreading merck hacked, says profits impacted for remainder of year $mrk |rt AT_USER astrazeneca shows the peril of going a
2017-07-29: spirit of america management corp ny has $840,000 position in merck &amp; company, inc. $mrk |spirit of america management corp ny has $840,000 position in merck &amp; company, inc. $mrk |merck &amp; 
2017-07-30: merck &amp; company, inc. $mrk issues quarterly  earnings results, beats expectations by $0.14 eps |merck &amp; company, inc. $mrk posts  earnings results, beats estimates by $0.14 eps |merck &amp; co
2017-07-31: henderson group plc boosts position in merck &amp; company, inc. $mrk |henderson group plc boosts position in merck &amp; company, inc. $mrk |united fire group inc. holds stake in merck &amp; company,
2017-08-01: traders sell shares of merck &amp; company, inc. $mrk on strength $mrk |traders sell shares of merck &amp; company, inc. $mrk on strength $mrk |merck &amp; company, inc. $mrk shares bought by xact kap
2017-08-02: investors buy shares of merck &amp; company, inc. $mrk on weakness |atlas brown inc. acquires 888 shares of merck &amp; company, inc. $mrk |atlas brown inc. acquires 888 shares of merck &amp; company,
2017-08-03: rt AT_USER mavyret 1st hcv regimen to have 8wk tx label for naive and exp. without a nuc  $abbv $enta $gild $¡­|rt AT_USER mavyret 1st hcv regimen to have 8wk tx label for naive and exp. without a nuc
2017-08-04: $dvax was thinking about price action today.  wondering if $mrk is buying shares.  would be smart if they are planning collab or bo.|why biotechs outperformed their pharma brethren in june quarter $vr
2017-08-05: rt AT_USER upcoming pdufa dates $ibb $dvax now nivember. $atrs $ptct $mrk $tsro $adms $neos $flxn $bmy |merck &amp; company, inc. $mrk shares sold by blue chip partners inc. |rt AT_USER upcoming pdufa
2017-08-06: #partners at  hold #degrees from #elite #private #universities $pg $cvx $mrk $cmcsa $txn #fridayfeeling|#partners at  hold #degrees from #elite #private #universities $pg $cvx $mrk $cmcsa $txn #friday
2017-08-07: buysideclosing imbalances $gm $cl $vsh $cnp $mrk $bk $ups $mplx $apc $por $clf $aa $pep $bwa $twx $mor $syy $nycb  |merck &amp; company, inc. $mrk shares sold by first national bank of omaha |q2 earni
Answer:
Fall