Assess the data and tweets to estimate whether the closing price of $pfe will escalate or deflate at 2017-08-31. 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
2017-08-17,1.0,1.5,0.0,-1.2,-1.2,0.9,1.2,0.8,0.5,0.5,0.4
2017-08-18,0.7,0.9,-0.1,-0.8,-0.8,1.4,1.7,1.6,1.3,1.3,1.3
2017-08-21,-0.5,0.3,-1.3,0.3,0.3,0.8,1.3,1.3,1.0,1.0,0.9
2017-08-22,-1.2,0.2,-1.4,1.2,1.2,-0.5,0.1,0.2,-0.2,-0.2,-0.2
2017-08-23,-0.5,0.5,-0.5,0.3,0.3,-0.9,-0.3,-0.0,-0.3,-0.4,-0.5
2017-08-24,0.4,0.5,-0.2,-0.0,-0.0,-0.7,-0.3,-0.0,-0.2,-0.4,-0.4
2017-08-25,-0.3,0.7,-0.5,0.5,0.5,-0.7,-0.7,-0.5,-0.6,-0.9,-0.8
2017-08-28,0.1,0.4,-0.2,0.2,0.2,-0.5,-0.9,-0.7,-0.8,-1.0,-1.0
2017-08-29,-0.2,0.1,-0.8,0.1,0.1,-0.4,-1.0,-0.8,-0.7,-1.0,-1.1
2017-08-30,0.1,0.1,-0.6,-0.1,-0.1,-0.1,-0.8,-0.6,-0.5,-0.8,-0.9

2017-08-17: rt AT_USER $nwbo $kite $mrk $azn $juno $cldx $bmy $pfe $gsk if dcvax-l is approved, w/9k annual cases, w/450m shares - share price¡­|rt AT_USER $pfe wins approval for blood cancer drug besponsa |rt AT
2017-08-18: rt AT_USER $nwbo $kite $mrk $azn $juno $cldx $bmy $pfe $gsk if dcvax-l is approved, w/9k annual cases, w/450m shares - share price¡­|salphatrending: pfizer inc. 2017 q2 - results - earnings call slide
2017-08-19: 3 things in biotech you should learn today: august 19, 2017  $azn $clvs $mrk $pfe $sgen $tsro|pfizer, inc. $pfe receives hold rating from jefferies group llc |rt AT_USER #ai #robotics #bigdata #genomi
2017-08-20: rt AT_USER who will buy $dcth ? #mergersandacquisitions  $pfe $bmy  $jng $celg #pennystocks #stockmarket|here's how much $10,000 invested in pfizer in 1977 is worth now AT_USER #stocks $pfe, $zts |pfi
2017-08-21: $pfe 3 dividend stocks perfect for retirement |rt AT_USER fda gives green light to $pfe new all drug |fda gives green light to $pfe new all drug |scan results - macd bearish centerline cross today: $g
2017-08-22: what to expect from jazz pharmaceuticals¡¯ oncology portfolio  $jazz $pfe $shpg $amgn|AT_USER yeah it seems everyone is after this! first $pfe, now genentech... makes sense i guess|#pfizer wins pneumo
2017-08-23: here's why clovis stock is up almost 60% so far in 2017  $clvs $pfe $bmy|traders sell pfizer, inc. $pfe on strength following insider selling |rt AT_USER #crispr #cas9 offers grt hope for #glaucoma #o
2017-08-24: dyk fda will hold 6 adcomms this september? #midac #pedac #vrbpac #aadpac #dsrm #odac #pcns #opioids $gsk $pfe $ptct |$halo makes other drugs more effective, saving money for big pharma and patients. 
2017-08-25: price returns vs expected daily move $adms $aveo $abbv $pfe $bmy $thc $cvs $jnj $celg $gild $teva $vrx¡­ |macd(12, 26, 9) bull crossover stocks: $adms, $bhp, $esv, $f, $fit, $orcl, $pfe  |michigan the
2017-08-26: 3 #dividend stocks perfect for retirement $csco $deo $pfe  #investing |rt AT_USER #ai #ml #iot #robotics to usher revolution in #oncology  $goog $msft $ibm $jnj $pfe $nvs $gsk $sny $m¡­|blackhill capi
2017-08-27: rt AT_USER $bay &amp; $jnj trying to challenge $pfe &amp; $bmy at #esccongress |stocks with bullish macd, price&gt;20.00, above 21-dma, vol&gt;500k 1/3: $zayo $vmr $stl $ry $gnrc $bro $jbl $bhp $gps $
2017-08-28: rt AT_USER 3 #dividend stocks perfect for #retirement $csco $deo $pfe  #investing |rt AT_USER $pfe is actively trading after hours, trading 2,387,082 shares|$pfe is actively trading after hours, tradi
2017-08-29: pfizer presents encouraging eliquis results in nvaf patients $pfe also $bmy $jnj $ptla |3 #dividend stocks perfect for #retirement $csco $deo $pfe  #investing |cempra to combine with melinta, to add t
2017-08-30: investors buy shares of pfizer, inc. $pfe on weakness |investors buy shares of pfizer, inc. $pfe on weakness |investors buy shares of pfizer, inc. $pfe on weakness |investors buy shares of pfizer, inc
Answer:
Rise