Analyze the information and social media posts to determine if the closing price of $gild will ascend or descend at 2017-02-23. Please 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
2017-02-08,0.7,0.7,-1.6,-8.6,-8.6,6.8,7.2,6.9,7.4,8.6,8.7
2017-02-09,1.1,1.8,-0.3,-1.9,-1.9,6.8,8.3,8.3,8.8,10.0,10.3
2017-02-10,-0.8,0.6,-1.4,1.2,1.2,3.8,6.3,6.6,7.0,8.1,8.7
2017-02-13,-1.2,0.2,-1.7,1.9,1.9,0.4,3.7,4.3,4.6,5.6,6.4
2017-02-14,1.6,1.7,-0.3,-0.1,-0.1,-1.1,3.2,4.1,4.4,5.3,6.4
2017-02-15,-3.0,0.3,-3.1,3.3,3.3,-3.5,-0.6,0.6,0.9,1.6,2.7
2017-02-16,-0.4,0.5,-1.5,0.7,0.7,-2.8,-1.6,-0.2,0.1,0.7,1.7
2017-02-17,0.5,1.3,-0.2,-0.7,-0.7,-1.2,-1.3,0.3,0.7,1.1,2.1
2017-02-21,1.0,1.0,-0.7,-0.8,-0.8,0.1,-0.9,0.9,1.4,1.7,2.6
2017-02-22,0.4,1.3,-0.2,-0.7,-0.7,1.1,-0.9,1.2,1.9,2.2,3.0

2017-02-08: rt AT_USER $gild buybacks: "a more efficient way to destroy value than making an expensive acquisition, w. none of the upside." |#gileadsciences gilead stock dives to 22-month low as hep c cure drains
2017-02-09: #gileadsciences: #deadmoney? i'm long $gild long-term  via AT_USER|investors buy shares of gilead sciences, inc. $gild on weakness following analyst downgrade |AT_USER AT_USER AT_USER AT_USER hopefull
2017-02-10: rx reading: $gild quiet on m&amp;a, bayer and $jnj notch win for xarelto, $shpg faces pay-for-delay charges | jbp student made more than $50k read his review to find out how! $amd $xom $gild $feye|AT_
2017-02-11: yes, $gild|#biotechs eye retroviruses &amp; opportunistic infections conference #hiv $gsk $gild $btk AT_USER AT_USER |$gild hcv franchise is just gonna be flat in 2017 - without china.|rt AT_USER AT_U
2017-02-12: if $ibb can start moving, $gild $bmy (beaten names, which have offered fake bounce in the last few months )are on radar|rt AT_USER pharma m&amp;a in 2017: the most likely deal hunters  $amgn $gild $mr
2017-02-13: $gild #gilead sciences, inc. gilead presents new phase 2 data on bictegravir, an...  #news |$gild ph 2 trial in hiv with bictegravir - 97% patients had undetectable levels at 24 and 48 weeks. (1/2)|rt
2017-02-14: rt AT_USER isn't it odd that the company that cured hep c painlessly and continues to make hiv a chronic condition is the worst at pr¡­|rt AT_USER isn't it odd that the company that cured hep c painle
2017-02-15: rt AT_USER $gild well into the gap, 21d ahead. finally getting some love |$gild well into the gap, 21d ahead. finally getting some love |AT_USER you are not too late for the $gild bullet train express
2017-02-16: biotech recap: rally continues with strong tape $ibb $xbi also $biib $clvs $gild $tsro $alny $alxn $bmrn $incy $sge |rt AT_USER $gild pipeline, now filgotinib for ra, crohn, uc and various inflammator
2017-02-17: $gild:us is abbvie the next gilead? #gilead sciences inc   #nasdaq|rx reading: $agn continues deal spree; $immu has trouble sealing deal with $sgen; $mrk and $gild release hiv data |AT_USER thoughts o
2017-02-18: $gild bought low at 65.60.  target is $72|$gild:us better buy: gilead sciences, inc. vs. pfizer inc. #gilead sciences inc   #nasdaq|rt AT_USER #equityresearch top 10 net payout yields for february 201
2017-02-19: 02/17/17 volume leader #74 - gild 11,186,801 gilead sciences inc $gild 69.85 -0.46 -0.65% high today of 70.79  |rt AT_USER investors are betting big against intercept pharmaceuticals. are they wrong? 
2017-02-20: $gild hands off rights to addiction  drug to amygdala neurosciences |rt AT_USER why glaxosmithkline's 2017 guidance is conservative  $gild $jnj $myl $gsk|$gild sum put vol=3,990 sum call vol=8,346 put
2017-02-21: rt AT_USER hepatitis b market: emerging players could make the difference  $abus $gild $gsk $mrk $nvs $sny $v¡­|AT_USER agree $gild not likely, personally i  would hate that but some tweeps made a goo
2017-02-22: 3 things gilead sciences' ceo just said that you'll want to know AT_USER #stocks #biotech $gsk, $gild |#gileadsciences gilead, glaxo pitted in hiv battle; both struggle vs. standard drugs. read more: 
Answer:
Rise