Reflect on the provided data and tweets to anticipate if the closing price of $mrk is going to increase or decrease at 2015-07-27. Kindly 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
2015-07-13,0.7,1.2,-0.3,-0.1,-0.1,-0.3,-0.5,0.0,0.0,0.2,0.7
2015-07-14,-0.5,0.2,-0.9,0.6,0.6,-0.8,-0.9,-0.6,-0.5,-0.3,-0.0
2015-07-15,-0.1,0.6,-0.3,0.1,0.1,-0.5,-0.8,-0.8,-0.5,-0.4,-0.1
2015-07-16,-0.5,0.1,-0.8,1.0,1.0,-1.0,-1.6,-1.7,-1.4,-1.4,-1.2
2015-07-17,-0.2,0.2,-0.4,0.0,0.0,-0.7,-1.4,-1.6,-1.4,-1.4,-1.2
2015-07-20,-0.1,0.3,-0.2,0.3,0.3,-0.7,-1.4,-1.8,-1.6,-1.7,-1.5
2015-07-21,0.5,0.6,-0.0,-0.6,-0.6,0.1,-0.8,-1.1,-1.1,-1.0,-0.9
2015-07-22,0.7,1.5,-0.2,-0.9,-0.9,1.0,0.3,-0.1,-0.2,-0.1,-0.0
2015-07-23,0.8,0.8,-0.2,-0.1,-0.1,0.8,0.5,0.1,-0.1,0.1,0.0
2015-07-24,0.5,0.8,-0.2,-1.1,-1.1,1.5,1.6,1.2,1.0,1.1,1.1

2015-07-13: our stock pick on $gequ nearly quadrupled in value in less than 2 weeks! major news:  #breakout $insy $mrk|our penny stock newsletter alerts gained 350% in just 8 trading days! get our next pick early
2015-07-15: our stock pick on $ppch is up over 300% since our original release at .02! huge news:  #stocks $mrk $lgnd
2015-07-18: our platinum subscribers saw their penny stock alerts gain over 350% in 2 weeks! big update:  #stocks $mrk $lgnd
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2015-07-20: our stock pick on $gequ nearly quadrupled in value in less than 2 weeks! major news:  #stocks $mrk $lgnd
2015-07-21: roche earnings are likely to show resistance against competition  by trefis team $rhhby $mrk $bmy
2015-07-22: rt AT_USER $mrk wins european commission ok for #keytruda in 1st line &amp; previously treated advanced #melanoma |$mrk - merck announces fourth-quarter 2015 dividend 
2015-07-23: ashr db x-trackers harvest csi 300 china a-shares fund news$ashr $vnr $mrk $lng #ashr #investing #share|dis walt disney co. p/e ratio$dis $xlu $kgc $mrk #dis #tradeideas #stock|fv first trust dorsey w
2015-07-24: jnug direxion daily junior gold miners index bull 3x shares exchange$jnug $mrk $avgo $vrx #jnug #share #stock|mux mcewen mining inc. eod data$mux $mrk $nke $spxs #mux #invest #stock|everything's comin
2015-07-25: $mrk active, relative volume: 5.82, 1h, 5:00 pm, #nyse $dji $spy   
Answer:
Fall