Utilize the data and tweets at hand to foresee if the closing price of $ba will elevate or diminish at 2017-04-18. 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
2017-04-03,0.2,0.6,-0.7,-0.1,-0.1,0.4,0.1,0.5,0.9,1.4,1.2
2017-04-04,-1.0,0.1,-1.1,1.2,1.2,-0.6,-0.9,-0.6,-0.3,0.2,0.1
2017-04-05,1.1,1.8,-0.1,-0.9,-0.9,0.2,0.0,0.2,0.5,0.9,1.0
2017-04-06,0.1,0.5,-0.1,0.2,0.2,-0.0,-0.1,0.0,0.2,0.6,0.8
2017-04-07,-0.3,0.1,-0.9,0.8,0.8,-0.6,-0.8,-0.8,-0.6,-0.3,0.0
2017-04-10,0.8,1.4,-0.0,-0.7,-0.7,0.2,0.0,-0.2,0.1,0.4,0.7
2017-04-11,-0.6,0.0,-0.9,0.6,0.6,-0.4,-0.5,-0.7,-0.5,-0.3,0.1
2017-04-12,1.2,1.2,-0.1,-1.4,-1.4,0.9,0.9,0.7,0.8,1.0,1.4
2017-04-13,0.1,0.7,-0.0,-0.2,-0.2,1.0,1.0,0.9,1.0,1.2,1.5
2017-04-17,-1.8,0.0,-1.9,1.9,1.9,-0.9,-0.8,-0.9,-0.9,-0.8,-0.5

2017-04-03: AT_USER who would hire $bbd.b execs... they are losers! $ba is in a totally different ballpark!|AT_USER how can anyone state $bbd.b has to pay the top execs big bucks when they aren't winners... $ba w
2017-04-04: boeing wins $3 billion iran sale in potential test for trump  $ba #boeing|boeing wins $3 billion iran sale in potential test for trump  $ba| alerts stocks w/ 10-1800% potential. join now promo  $mgt $
2017-04-05: stock market commentary for thursday, april 06 - $tgt, $tsla, $xom, $jpm, $ba, $xrt, $jwn, $nflx, $msft, $gs  |airbus, boeing close in on qantas' ultra-long haul dream  $ba #boeing|airbus, boeing clos
2017-04-06:  members have an advantage. see track record &amp; join  $bmy $pot $apa $cnq $ccl $ba|learn to pick hot #stocks buy signals &gt; $ba $pcln &amp; 9 other examples by institutional #traders &gt;&gt;¡­ |
2017-04-07: boeing¡¯s $ba buy rating reiterated at gabelli  #stocks|boeing¡¯s $ba buy rating reiterated at gabelli |boeing¡¯s $ba buy rating reiterated at gabelli |rt AT_USER chasing boeing: aerospace giant¡¯s ch
2017-04-08: 5 most undervalued stocks in the dow - april 2017  $axp $ba $csco $trv $utx|learn to pick hot #stocks buy signals &gt; $ba $pcln &amp; 9 other examples by institutional #traders &gt;&gt;¡­ |rt AT_USER
2017-04-09: 5 most undervalued stocks in the dow - april 2017  $axp $ba $csco $trv $utx|rt AT_USER unlocked: weekly swing trading stock picks wed apr 5 $ba, $lit, $rig, $abx, $xme, $exk, $baba, $wynn, $nflx, $urr
2017-04-10: boeing co $ba given average rating of ¡°hold¡± by brokerages |spacex changes the language of space flight  $ba $lmt |learn to pick hot #stocks buy signals &gt; $ba $pcln &amp; 9 other examples by inst
2017-04-11: $rtn $lmt $ba $ita us defense contractors stocks could see a huge increase this year thanx to north korea &amp; syria |$ba boeing co (nyse:ba) invested in two startups  ¡­ ¡­|$ita is the correction in
2017-04-12: delta reviewing $14b airbus wide-body jet deal, heightening glut concerns $dal $eadsf $eadsy $ba |AT_USER for host at AT_USER ? $vrx $agn $myl $mrk $twtr $aapl $brk $iep $snap $googl $aapl $goog $tsla
2017-04-13: track news with various time frames for $djia under one watchlist $cvx $ba $ibm  |boeing's second 737 max variant begins flight test  $ba #boeing|boeing's second 737 max variant begins flight test  $b
2017-04-14: #imagination and #creativity will grow $cah $ba $c $amzn $wfc -  $adbe $low $oxy $wynn $x #fridayfeeling|feeling the need for a nice setup today? check out $ba at  #debt #duo|track news with various t
2017-04-15: rt AT_USER can you invest with a conscience? $ba $cvx $cxw $gd $geo $hd $jpm $ko $lmt $low $ma $mcd $mo¡­  #inve¡­|rt AT_USER investing 101: buying and selling stocks for the average joe or jane  $aap
2017-04-16: AT_USER thanks for follow! all he best from #sanfrancisco! see vista partners #investingforlife #dow30¡­ |rt AT_USER archived: u.s. army buys boeing¡¯s pricey apache attack helicopter for $3.4billion 
2017-04-17: rt AT_USER #boeing to dismiss hundreds of #engineers amid #sales #slowdown  via AT_USER #avgeek #jobs $ba|rt AT_USER boeing set to use 3d printed titanium parts for 787 - 3d printing  $ba #3dprinting|
Answer:
Fall