Utilize the data and tweets at hand to foresee if the closing price of $amgn will elevate or diminish at 2015-07-31. Only answer with Rise or Fall.
Context: date,open,high,low,close,adj-close,inc-5,inc-10,inc-15,inc-20,inc-25,inc-30
2015-07-17,-0.1,0.1,-1.6,0.1,0.1,-1.8,-3.9,-4.4,-3.7,-3.8,-3.8
2015-07-20,-0.5,0.6,-0.9,0.7,0.7,-1.4,-3.9,-4.8,-4.2,-4.2,-4.3
2015-07-21,0.6,1.0,-0.8,-0.4,-0.4,-0.5,-3.0,-3.9,-3.8,-3.6,-3.8
2015-07-22,-1.7,0.3,-1.7,0.3,0.3,-0.3,-2.6,-3.8,-4.1,-3.8,-3.9
2015-07-23,0.5,0.6,-0.8,-0.1,-0.1,-0.1,-1.7,-3.3,-3.8,-3.5,-3.7
2015-07-24,2.2,3.2,-0.9,-3.4,-3.4,2.8,1.9,0.2,-0.5,-0.1,-0.3
2015-07-27,-3.7,0.2,-3.9,4.4,4.4,-1.4,-1.7,-3.5,-4.5,-4.2,-4.3
2015-07-28,-3.8,1.2,-3.8,4.3,4.3,-4.5,-5.1,-6.9,-7.8,-8.0,-8.0
2015-07-29,0.8,1.3,-1.4,-0.7,-0.7,-2.9,-3.7,-5.4,-6.6,-7.1,-7.0
2015-07-30,-0.9,0.5,-2.0,0.1,0.1,-2.1,-3.3,-4.8,-6.3,-6.9,-6.8

2015-07-17: #amgen reports positive preliminary results on #leukemia drug #blincyto $amgn | AT_USER 
2015-07-18: interactive chart -&gt;      $amgn cash from operations is expanding. 
2015-07-20: rt AT_USER alirocumab headed for a likely approval, pdufa on friday. maybe repatha as well?$sny $regn $amgn|xlf financials select sector spdr 52wk high$xlf $ms $salt $amgn #xlf #stocks #stockmarket
2015-07-21: our penny stock pick on $gequ is up over 416% in the past 3 weeks! see our next pick early:  $cmcsa $intc $amgn|no pricing info from $amgn yet -- #pcsk9|federal circuit $amgn $nvs sandoz #zarxio rulin
2015-07-22: amgn amgen, inc. shares$amgn $fb $ko $unh #amgn #stocks #investing|amgn top news - jul 22nd, 2015 $amgn |rt AT_USER icymi: AT_USER first-in-class cholesterol-lowering therapy repatha approved in eu  $
2015-07-23: $nflx netflix $goog $vale $amgn $googl #finance #stocks $sina $acrx $umpq $axp  $lly $nke $cmcsa $mdlz
2015-07-24: nerv minerva neurosciences, inc. news$nerv $amgn $lyb $jnj #nerv #invest #stock|adding $rxdx $pirs $gild $amgn $dow $espr $mack $cpix $eprs $loxo $gs $dow $krny $mrnasubtracting $zbio
2015-07-25: vnq vanguard reit vipers last price$vnq $nvax $abx $amgn #vnq #nasdaq #investing|cree cree, inc. change$cree $jazz $amgn $dnrg #cree #nasdaq #stock|feye fireeye inc. company info$feye $xli $amgn $ung 
2015-07-27: goes to all time highs &gt; 166. $amgn |scan results - 180 bullish setup today: $teva $ctlt $logm $bldr $amgn $thor $anip $srne $opht $vrx ... 
2015-07-29: agn allergan plc day low$agn $dis $hyg $amgn #agn #stocks #stocks|amba ambarella, inc. ex-div date$amba $amgn $aapl $scty #amba #invest #pennystocks|xlb materials select sector spdr message board post
2015-07-30: pm$amgn $deck $feye $lnkd$brcm $expe $ea $klac$ngvc $outr $ptct $sgen*japan econ reportsam$stx $cboe $xom $rcl |170+ co earnings tomorrow #afterhours$amgn $brcm $lnkd $ea $expe $dlr $feye $flr $sam $s
Answer: