Contemplate the data and tweets to guess whether the closing price of $ba will surge or decline at 2017-03-31. 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
2017-03-17,-1.0,0.2,-1.1,1.1,1.1,-0.6,-0.1,0.2,-0.5,-1.6,-2.9
2017-03-20,0.4,0.4,-0.1,-0.4,-0.4,-0.2,0.2,0.6,0.1,-1.0,-2.2
2017-03-21,2.3,2.4,-0.3,-1.9,-1.9,1.4,1.8,2.4,2.1,1.1,-0.0
2017-03-22,-0.6,0.1,-0.8,0.6,0.6,0.6,0.9,1.6,1.5,0.8,-0.4
2017-03-23,0.0,0.3,-0.4,0.2,0.2,0.4,0.6,1.2,1.4,0.8,-0.3
2017-03-24,0.6,1.0,-0.6,-0.8,-0.8,0.7,1.3,1.8,2.2,1.7,0.7
2017-03-27,-1.0,0.2,-1.3,0.2,0.2,0.2,0.9,1.4,1.9,1.6,0.8
2017-03-28,-0.6,0.2,-1.3,0.7,0.7,-0.4,0.1,0.5,1.1,0.9,0.2
2017-03-29,-0.1,0.2,-0.4,0.2,0.2,-0.4,-0.1,0.2,0.8,0.8,0.2
2017-03-30,-0.4,0.3,-0.4,0.2,0.2,-0.6,-0.3,-0.1,0.4,0.7,0.2

2017-03-17: ba +1.91 total advance today 03/17/17. boeing company $ba 180.10 stock hit a high of 180.38 and 178.17 low wit |#boeing boosts payouts to ceo and ge recruit. read more:  $ba|a winning boeing bet  $ba|
2017-03-18: $ba/:ln jefferies group llc reiterates hold rating for bae systems plc (ba) #bae systems plc   #stoxx600|rt AT_USER $axp $ba $cat $csco $cvx $dd $dis long and short positions from the dow jones, up to
2017-03-19: defense sector update march 13-19: billions of reasons to like defense  $ba $baesy $gd $hii $lmt $noc $osk $rtn|defense sector update march 13-19: billions of reasons to like defense $ba $baesy $gd $h
2017-03-20: AT_USER AT_USER long term outlook for $ba $bac $csco $jpm $logi $wm hold onto or sell?|#baesystems #esystems plc's hold rating reaffirmed at jefferies group llc. read more:  $ba|#baesystems #esystems 
2017-03-21: AT_USER AT_USER thanks.this makes sense. aftermarket margin is very high for $ba, $lmt $utx, $hon and etc.|i am short $aapl $pcln $goog $ba $qqq $rut. covered $spx $gs today |rt AT_USER dragging the #
2017-03-22: rt AT_USER the bull case for tax cuts if obamacare repeal fails  $jpm $gs $ge $wmt $nke $ba |$ba navy may add strike, surveillance back to carrier-based drone |#boeing sets 31 march for 787-10 first f
2017-03-23: $ba/:ln bae systems plc (ba) receives hold rating from jefferies group llc #bae systems plc   #ldn100|AT_USER its a bizarre thought that this giant stock was just $98.83 in feb'2016. its surprisingly 
2017-03-24: track news with various time frames for $djia under one watchlist $cvx $ba $ibm  |#baesystems top boxers aid blackpool man's specialist underpants firm. read more:  $ba| members have an advantage. see
2017-03-25: $ba get 14 days #free #premium access on the #1 #stock #app &amp; #trump competition:  #nyctaf #ultra2017|rt AT_USER how a border tax could divide boeing and suppliers $ba |rt AT_USER how a border tax
2017-03-26: rt AT_USER pro portfolio proof ii: david katz 'safer' value portfolio picks  $abbv $ba $bbt $cat $csco $gis $¡­|pro portfolio proof ii: david katz 'safer' value portfolio picks  $abbv $ba $bbt $cat $c
2017-03-27: rt AT_USER AT_USER has been crushing his #robinhood account challenge $spy $qqq $aapl $fb $twtr $nvda $amzn $nflx $googl $a¡­|rt AT_USER turkish airlines defers airbus aircraft beyond 2020  $ba $eadsf
2017-03-28: $ba here's why boeing is working closely with a car seat-maker |#imagination and #creativity will grow $cah $ba $c $amzn $wfc -  $adbe $low $oxy $wynn $x #fridayfeeling|#imagination and #creativity wi
2017-03-29: dividend growth investors: quality might be only half the battle $al $apog $ayr $ba $ccl $cl¡­¡­ |dividend growth investors: quality might be only half the battle $al $apog $ayr $ba $ccl $cl¡­¡­ |divi
2017-03-30: AT_USER they said the air force wants 350 of them. those t-38s are old as hell. $ba looking good for it w/ 4th/5th gen fighter trainer.|AT_USER just read up. northrop pulled out of the race in feb. lo
Answer:
Fall