Scrutinize the data and tweets to envisage if the closing price of $mrk will swell or contract at 2015-05-22. Please affirm either Rise or Fall.
Context: date,open,high,low,close,adj-close,inc-5,inc-10,inc-15,inc-20,inc-25,inc-30
2015-05-08,0.4,1.1,-0.1,0.7,0.7,-0.4,-1.4,-2.7,-3.3,-3.8,-4.1
2015-05-11,1.1,1.1,-0.3,-1.2,-1.2,0.6,0.3,-1.2,-1.9,-2.4,-2.7
2015-05-12,0.2,0.5,-0.6,-0.9,-0.9,1.2,1.1,-0.1,-0.8,-1.4,-1.8
2015-05-13,0.7,1.1,-0.4,-0.4,-0.4,1.3,1.5,0.5,-0.3,-0.8,-1.2
2015-05-14,-0.5,0.2,-1.2,1.0,1.0,0.1,0.5,-0.2,-1.1,-1.6,-2.1
2015-05-15,-0.5,0.0,-0.7,0.8,0.8,-0.8,-0.2,-0.7,-1.6,-2.2,-2.6
2015-05-18,0.3,0.7,0.0,-0.4,-0.4,-0.5,0.1,0.0,-1.0,-1.6,-2.1
2015-05-19,-0.9,0.7,-1.0,0.8,0.8,-1.0,-0.8,-0.8,-1.6,-2.2,-2.8
2015-05-20,0.3,0.6,-0.0,-0.1,-0.1,-0.4,-0.7,-0.6,-1.3,-2.0,-2.5
2015-05-21,0.7,1.1,-0.0,-0.6,-0.6,0.3,-0.1,0.1,-0.5,-1.3,-1.8

2015-05-08: dow #stocks trend $jpm $mrk $nke $cat $v $msft $axp $ibm $gs $ge $dis $unh $utx $mcd $cvx $xom $csco $vz $mmm  @ |rt AT_USER $isr $mrk  isoray cesium-131 5/8 2:30pm study ...implants resulted in no lo
2015-05-09: xoma xoma ltd. ex-div dateclick here -&gt; trending $xoma $tlt $biib $mrk #xoma #stock #tradeideas
2015-05-10: $xoma $mrk:why making dramatic moves: xoma corporation (nasdaq:xoma ...:
2015-05-11: rt AT_USER roth the state of immunotherapy 3.0: "silver linings immunobook"; bright horizons $cldx $lbio $mrk $bmy |$mrk - statement of changes in beneficial ownership (4) 
2015-05-12: merck  &amp; co. evp adam schechter sells $642,719 in $mrk |$mrk received a new alert. find out why at  #stocks #daytrading #trading #mkt  #nyse #nasdaq #markets 238|dow jones descendió 0.20% colocánd
2015-05-13: merck  &amp; co. evp adam schechter sells $642,719 in $mrk |the "stock options 101" hd video package is 100% free.  $wfm $ko  $mrk  $bmgp $spg  $mnkd 
2015-05-14: erx direxion daily energy bull 3x shares eod dataclick here -&gt; trending $erx $xme $adbe $mrk #erx #invest…|our alert on $tlfx gained 77.77% from last week's low to monday's close! big news:  #break
2015-05-15: tim anderson sees merck coming out of sglt2 safety woes with stronger januvia sales.$mrk $jnj $lly|rt AT_USER view today's #pharma daily news round-up video: takeda, $amgn, amg 334, actavis, $srne, cy
2015-05-16: ntap network appliance, inc. quotesclick here -&gt; trending $ntap $oa $tsl $mrk #ntap #finance #finance|hayul #hayul 1luckyjimmy: mack merrimack pharmaceuticals, inc. day lowclick here -&gt; trending
2015-05-17: AT_USER AT_USER AT_USER AT_USER  sell $mrk?$5.3bn vaccine revenues,13%of sales, far from a "rounding error"
2015-05-18: vrx valeant pharmaceuticals intl, inc. prev closeclick here -&gt; trending $vrx $oled $mrk $vois #vrx #tradeideas…
2015-05-20: brwc boreal water collection inc. newsclick here -&gt; trending $brwc $drrx $mrk $sh #brwc #stockmarket #nasdaq
2015-05-21: gilead, merck and achillion/jnj square off in an hcv "nuc"lear showdown  $achn $jnj $mrk $gild
Answer:
Scrutinize the data and tweets to envisage if the closing price of $mrk will swell or contract at 2015-05-22. Please affirm either Rise or Fall.
Context: date,open,high,low,close,adj-close,inc-5,inc-10,inc-15,inc-20,inc-25,inc-30
2015-05-08,0.4,1.1,-0.1,0.7,0.7,-0.4,-1.4,-2.7,-3.3,-3.8,-4.1
2015-05-11,1.1,1.1,-0.3,-1.2,-1.2,0.6,0.3,-1.2,-1.9,-2.4,-2.7
2015-05-12,0.2,0.5,-0.6,-0.9,-0.9,1.2,1.1,-0.1,-0.8,-1.4,-1.8
2015-05-13,0.7,1.1,-0.4,-0.4,-0.4,1.3,1.5,0.5,-0.3,-0.8,-1.2
2015-05-14,-0.5,0.2,-1.2,1.0,1.0,0.1,0.5,-0.2,-1.1,-1.6,-2.1
2015-05-15,-0.5,0.0,-0.7,0.8,0.8,-0.8,-0.2,-0.7,-1.6,-2.2,-2.6
2015-05-18,0.3,0.7,0.0,-0.4,-0.4,-0.5,0.1,0.0,-1.0,-1.6,-2.1
2015-05-19,-0.9,0.7,-1.0,0.8,0.8,-1.0,-0.8,-0.8,-1.6,-2.2,-2.8
2015-05-20,0.3,0.6,-0.0,-0.1,-0.1,-0.4,-0.7,-0.6,-1.3,-2.0,-2.5
2015-05-21,0.7,1.1,-0.0,-0.6,-0.6,0.3,-0.1,0.1,-0.5,-1.3,-1.8

2015-05-08: dow #stocks trend $jpm $mrk $nke $cat $v $msft $axp $ibm $gs $ge $dis $unh $utx $mcd $cvx $xom $csco $vz $mmm  @ |rt AT_USER $isr $mrk  isoray cesium-131 5/8 2:30pm study ...implants resulted in no lo
2015-05-09: xoma xoma ltd. ex-div dateclick here -&gt; trending $xoma $tlt $biib $mrk #xoma #stock #tradeideas
2015-05-10: $xoma $mrk:why making dramatic moves: xoma corporation (nasdaq:xoma ...:
2015-05-11: rt AT_USER roth the state of immunotherapy 3.0: "silver linings immunobook"; bright horizons $cldx $lbio $mrk $bmy |$mrk - statement of changes in beneficial ownership (4) 
2015-05-12: merck  &amp; co. evp adam schechter sells $642,719 in $mrk |$mrk received a new alert. find out why at  #stocks #daytrading #trading #mkt  #nyse #nasdaq #markets 238|dow jones descendió 0.20% colocánd
2015-05-13: merck  &amp; co. evp adam schechter sells $642,719 in $mrk |the "stock options 101" hd video package is 100% free.  $wfm $ko  $mrk  $bmgp $spg  $mnkd 
2015-05-14: erx direxion daily energy bull 3x shares eod dataclick here -&gt; trending $erx $xme $adbe $mrk #erx #invest…|our alert on $tlfx gained 77.77% from last week's low to monday's close! big news:  #break
2015-05-15: tim anderson sees merck coming out of sglt2 safety woes with stronger januvia sales.$mrk $jnj $lly|rt AT_USER view today's #pharma daily news round-up video: takeda, $amgn, amg 334, actavis, $srne, cy
2015-05-16: ntap network appliance, inc. quotesclick here -&gt; trending $ntap $oa $tsl $mrk #ntap #finance #finance|hayul #hayul 1luckyjimmy: mack merrimack pharmaceuticals, inc. day lowclick here -&gt; trending
2015-05-17: AT_USER AT_USER AT_USER AT_USER  sell $mrk?$5.3bn vaccine revenues,13%of sales, far from a "rounding error"
2015-05-18: vrx valeant pharmaceuticals intl, inc. prev closeclick here -&gt; trending $vrx $oled $mrk $vois #vrx #tradeideas…
2015-05-20: brwc boreal water collection inc. newsclick here -&gt; trending $brwc $drrx $mrk $sh #brwc #stockmarket #nasdaq
2015-05-21: gilead, merck and achillion/jnj square off in an hcv "nuc"lear showdown  $achn $jnj $mrk $gild
Answer:+Fall