Contemplate the data and tweets to guess whether the closing price of $amgn will surge or decline at 2017-08-31. 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
2017-08-17,1.7,1.9,-0.0,-2.1,-2.1,1.1,1.7,2.2,3.0,3.5,3.3
2017-08-18,0.0,0.7,-0.5,-0.3,-0.3,1.3,1.7,2.3,3.0,3.6,3.6
2017-08-21,-0.4,0.3,-0.7,0.5,0.5,0.5,0.9,1.6,2.1,2.9,3.0
2017-08-22,-0.7,0.5,-0.7,1.1,1.1,-0.7,-0.4,0.3,0.7,1.6,1.8
2017-08-23,0.4,0.6,-0.1,-0.6,-0.6,-0.3,0.0,0.8,1.1,2.0,2.4
2017-08-24,-0.4,0.4,-0.8,0.6,0.6,-0.6,-0.4,0.1,0.5,1.2,1.7
2017-08-25,0.6,1.1,-0.2,-0.1,-0.1,-0.2,-0.2,0.1,0.6,1.2,1.7
2017-08-28,-0.5,0.5,-0.9,1.2,1.2,-1.0,-1.3,-1.2,-0.7,-0.2,0.4
2017-08-29,-0.9,0.1,-1.1,0.3,0.3,-1.0,-1.4,-1.4,-1.0,-0.7,0.1
2017-08-30,-0.8,0.8,-1.2,0.8,0.8,-1.3,-2.1,-2.2,-1.8,-1.5,-0.8

2017-08-17: traders buy amgen inc. $amgn on weakness |traders buy amgen inc. $amgn on weakness |traders buy amgen inc. $amgn on weakness |AT_USER AT_USER AT_USER hmmm, $amgn already a collaborator|#amgen and huma
2017-08-18: amgen inc. $amgn receives $186.10 consensus price target from brokerages |amgen inc. $amgn receives $186.10 consensus price target from brokerages |AT_USER AT_USER a step slow gets u fired when billio
2017-08-19: $amgn max pain is 170.00 for maturity 08/25/2017. prev close=167.29 #maxpain #options  |perigon wealth management llc maintains position in amgen inc. $amgn |amgen inc. $amgn stake reduced by laurel w
2017-08-20: $amgn max pain is 170.00 for maturity 08/25/2017. prev close=167.29 #maxpain #options  |rt AT_USER $xbi $ibb $nbi jeff: weekend thoughts and key questions we're getting: $amgn $biib $celg $gild $vrtx 
2017-08-21: 3 large-cap biotech stocks to scrape from the selloff $amgn $regn $celg  AT_USER|on our top 50 bearish list today: $prft $cafd $stbz $bg $rcii $amgn $vlo $omab $crto $psx ... |humana, #amgen to collab
2017-08-22: what to expect from jazz pharmaceuticals¡¯ oncology portfolio  $jazz $pfe $shpg $amgn|bearish trade setups - for whatever it's worth $c $cy $dan $jpm $len $amat $amgn $aal $fox $caa |which stock shoul
2017-08-23: 5 cheapest funds for dividend investors  $aapl $abt $acn $amgn $ba $cb $cl $cost $csco $cvs $cvx $dgro $fdx $gd $ge|this bull is getting old, so where is the value? - revisited  $aapl $abbv $amgn $amp
2017-08-24: 5 things for #pharma #marketers to know: thurs, aug 24 $amgn #pcsk9 #drugprices $azn $rog #fda #cardiovascular¡­ |follow #nasdaq 100 traders &amp; track their tweets under one watchlist $amgn $qcom  |
2017-08-25: rt AT_USER is the bull market coming to an end in 2017? $spy $aapl $fb $amzn $nflx $nvda $goog $amd $tsla $baba $bac $gs $jpm $c $¡­|plan your work and work your plan. believe the cynicism will be das
2017-08-26: $amgn max pain=170.00. maturity=09/01/2017. previous close=169.74 #maxpain #options  |AT_USER $amgn 63% market share, big bump|as amgen $amgn share price declined, shareholder orbimed advisors decreas
2017-08-27: rt AT_USER annual cost of $amgn's repatha would need to come down 71% to become cost-effective, says new study |why i love abbvie inc. AT_USER #stocks $amgn, $gild, $abt, $abbv |  &lt;&lt; jason bonds
2017-08-28: $ flows: selling on strength: among stocks that were up mon, these had the largest net outflows of money $spy $iwm¡­ |earn profits and yields from this megatrend  $amgn $abt $ohi|salphatrending: thoug
2017-08-29: $amgn open interest for maturity 09/01/2017. high put=170.00 high call=172.50 #maxpain #options¡­ |celgene $celg ebitda multiple of 24.8x doesn't look attractive vs peers: $bmy $abbv $mrk $shpg $amgn¡
2017-08-30: interview with connor bruggeman schooltrader extraordinaire!:  $nflx $himx $ino $amgn $googl|btw, estimated #earnings per share for $amgn is $3.09 it's 1.79% of the current price |$amgn amgen option o
Answer:
Rise