With the help of the data and tweets given, can you forecast whether the closing price of $mrk will climb or drop at 2015-07-21? Please state either Rise or Fall.
Context: date,open,high,low,close,adj-close,inc-5,inc-10,inc-15,inc-20,inc-25,inc-30
2015-07-07,-0.4,0.2,-1.4,0.8,0.8,-0.8,-0.2,-0.0,0.1,0.5,0.8
2015-07-08,0.7,0.7,-0.4,-1.1,-1.1,0.5,0.6,1.1,1.1,1.4,1.9
2015-07-09,1.2,1.4,-0.1,0.1,0.1,0.4,0.4,1.0,0.9,1.2,1.8
2015-07-10,0.2,0.5,-0.6,1.0,1.0,-0.5,-0.6,-0.1,-0.1,0.1,0.7
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

2015-07-07: vrx valeant pharmaceuticals intl, inc. change$vrx $itci $mrk $xiv #vrx #finance #investvxx ipath s&amp;p 500 vix…
2015-07-09: rt AT_USER after entresto, maybe innovation?  $nvs $cyad $amgn $agn $trvn $mrk
2015-07-10: our penny stock newsletter alerts gained 350% in just 8 trading days! get our next pick early:  $insy $mrk
2015-07-11: nugt ocata therapeutics, inc. shares$nugt $mrk $xlf $onvo #nugt #tradeideas #shareocat organovo holdings, inc.…|our stock pick on $gequ nearly quadrupled in value in less than 2 weeks! major news:  #s
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
2015-07-19: our penny stock picks have gained 3,600% in 9 months! subscribe to get our future picks:  #breakout $insy $mrk
2015-07-20: our stock pick on $gequ nearly quadrupled in value in less than 2 weeks! major news:  #stocks $mrk $lgnd
Answer:
Fall