Contemplate the data and tweets to guess whether the closing price of $agn will surge or decline at 2017-08-23. Please declare either Rise or Fall.
Context: date,open,high,low,close,adj-close,inc-5,inc-10,inc-15,inc-20,inc-25,inc-30
2017-08-09,0.7,1.6,-0.1,-0.7,-0.7,1.9,4.0,4.7,4.4,3.9,3.7
2017-08-10,2.2,2.4,-0.2,-2.4,-2.4,2.8,5.6,6.8,6.7,6.3,6.0
2017-08-11,-0.4,0.9,-0.7,0.3,0.3,1.7,4.4,6.0,6.1,5.8,5.6
2017-08-14,0.4,1.4,-0.1,-0.1,-0.1,1.1,3.7,5.5,5.9,5.8,5.5
2017-08-15,0.7,1.0,-0.1,-0.6,-0.6,1.0,3.4,5.5,6.3,6.3,6.0
2017-08-16,1.4,1.6,-0.4,-1.4,-1.1,1.2,3.6,5.9,7.0,7.1,6.9
2017-08-17,1.4,1.9,-0.3,-1.4,-1.4,2.1,4.0,6.5,8.1,8.3,8.2
2017-08-18,0.2,0.7,-0.4,-0.3,-0.3,1.7,3.6,6.1,7.8,8.3,8.4
2017-08-21,0.4,1.0,-0.3,-0.5,-0.5,1.4,3.2,5.7,7.7,8.4,8.6
2017-08-22,-0.1,0.6,-0.8,0.3,0.3,0.4,2.2,4.5,6.6,7.7,8.0

2017-08-09: achmea investment management b.v. takes position in allergan plc. $agn |achmea investment management b.v. takes position in allergan plc. $agn |north star asset management inc. has $6.42 million posit
2017-08-10: AT_USER $agn: saves lives, kills companies.|allergan plc.¡¯s $agn ¡°buy¡± rating reaffirmed at deutsche bank ag |and $amzn with their final 3 $brk $iep $ko $pep $agn $ibm $goog $msft $crm $cmg $hlf $d
2017-08-11: jim cramer says allergan shares are 'just too cheap' $agn  |ballentine partners llc has $688,000 stake in allergan plc. $agn |breton hill capital ltd. has $664,000 stake in allergan plc. $agn |allerga
2017-08-12: the good fight! $vrx $agn $myl $msft $twtr $crm $pep $ibm $prgo $amzn $ko $cmg $brk $iep $ba $teva $aapl $tst $btc¡­ |the good fight! $vrx $agn $myl $msft $twtr $crm $pep $ibm $prgo $amzn $ko $cmg $br
2017-08-13: $595 dinner? $5.95? i need a job! $agn $vrx $brk $iep $ko $pep $hd $f $gm $ge $hlf $mft $amzn $aapl $twtr $pypl¡­ |allergan plc. $agn stake raised by russell investments group ltd. |allergan plc. $agn
2017-08-14: rt AT_USER textbook busted pattern. a failed breakout often leads to collective abandonment. $agn #toast |textbook busted pattern. a failed breakout often leads to collective abandonment. $agn #toast 
2017-08-15: allergan plc. $agn shares sold by factory mutual insurance co. |berson &amp; corrado investment advisors llc has $6.49 million position in allergan plc. $agn |evening most tweeted big caps, check out 
2017-08-16:  &lt;&lt; want to see reviews of the best stock alerts services ? $vrx $ko $pep $agn $baba|s&amp;p100 #stocks performance $gd $amgn $msft $nee $rtn $bmy $celg $cat $fdx $jnj $pcln $mdt $dis $agn $intc
2017-08-17: somewhat favorable press coverage somewhat unlikely to affect allergan plc. $agn stock price |rt AT_USER no bids yet on my sax.  lots of lookers! maybe i could buy it back from you one day! $vrx $agn 
2017-08-18: $agn 15-sep-17 atm implied vol climbs +5.3%. straddle implies a move of ¡à4.6% |allergan plc. $agn lowered to sell at bidaskclub |AT_USER $agn down 15 of 17 days! when will the carnage stop? i want to
2017-08-19: allergan plc. $agn position raised by azimuth capital management llc |gilead: road to $100  $gild $abbv $agn $bax $vrtx $incy|gilead: road to $100  $gild $abbv $agn $bax $vrtx $incy|gilead: road to $1
2017-08-20: rt AT_USER $agn short interest up $200 million today, total short interest $1.4 billion. 9/15 210 puts also seeing high volumes.AT_USER|$agn - good to see others are catching on.  there is zero reason
2017-08-21: #allergan: botox and beyond in biotech. read more:  $agn|rt AT_USER AT_USER right. if $fl would have told me the numbers i¡¯d have been happy to help craft a hedging strategy. partners.¡­|$agn option 
2017-08-22: allergan q2/2017: be aware of the uncertainty on restasis  $agn|allergan plc. $agn expected to announce quarterly sales of $4.03 billion |allergan plc. $agn expected to announce quarterly sales of $4.
Answer:
Fall