Contemplate the data and tweets to guess whether the closing price of $ba will surge or decline at 2015-05-22. 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
2015-05-08,-1.7,0.3,-1.7,2.8,2.8,-2.0,-1.1,0.3,1.2,1.8,1.9
2015-05-11,-0.2,0.6,-0.5,0.3,0.3,-1.9,-1.5,-0.3,0.7,1.4,1.6
2015-05-12,-0.3,0.4,-1.0,-0.3,-0.3,-1.1,-1.3,-0.3,0.8,1.6,1.8
2015-05-13,-0.1,0.6,-0.4,0.1,0.1,-0.6,-1.4,-0.6,0.4,1.3,1.6
2015-05-14,-0.7,0.2,-0.9,1.6,1.6,-1.3,-2.6,-2.2,-1.3,-0.4,-0.0
2015-05-15,0.8,1.0,-0.4,-0.7,-0.7,-0.4,-1.6,-1.5,-0.6,0.1,0.7
2015-05-18,0.1,0.4,-0.3,-0.1,-0.1,-0.1,-1.3,-1.4,-0.6,0.1,0.7
2015-05-19,0.1,0.5,-0.2,0.2,0.2,-0.1,-1.2,-1.6,-1.1,-0.3,0.4
2015-05-20,0.5,0.6,-0.2,-0.4,-0.4,0.4,-0.4,-1.1,-0.8,-0.0,0.7
2015-05-21,-0.5,0.2,-0.8,0.6,0.6,-0.3,-0.6,-1.5,-1.4,-0.7,-0.1

2015-05-09: canaccord maintains buy on boeing co ahead of upcoming investor day $ba 
2015-05-12: boeing cfo: usd 502b baclog represents 5 years of revenue $ba
2015-05-13: $ba - boeing president and coo muilenburg to speak at bernstein strategic decisions conference on may 27 
2015-05-14:  $ba
2015-05-15: ba gapped up +0.12 $ba last price 147.96 day high 148.25 day low 146.65 change +2.34 volume 3,495,384 today 15 
2015-05-16: largest aerospace and defense assets vs. earnings  $ba  $utx    $rtn  $txt  chart:  
Answer:
Contemplate the data and tweets to guess whether the closing price of $ba will surge or decline at 2015-05-22. 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
2015-05-08,-1.7,0.3,-1.7,2.8,2.8,-2.0,-1.1,0.3,1.2,1.8,1.9
2015-05-11,-0.2,0.6,-0.5,0.3,0.3,-1.9,-1.5,-0.3,0.7,1.4,1.6
2015-05-12,-0.3,0.4,-1.0,-0.3,-0.3,-1.1,-1.3,-0.3,0.8,1.6,1.8
2015-05-13,-0.1,0.6,-0.4,0.1,0.1,-0.6,-1.4,-0.6,0.4,1.3,1.6
2015-05-14,-0.7,0.2,-0.9,1.6,1.6,-1.3,-2.6,-2.2,-1.3,-0.4,-0.0
2015-05-15,0.8,1.0,-0.4,-0.7,-0.7,-0.4,-1.6,-1.5,-0.6,0.1,0.7
2015-05-18,0.1,0.4,-0.3,-0.1,-0.1,-0.1,-1.3,-1.4,-0.6,0.1,0.7
2015-05-19,0.1,0.5,-0.2,0.2,0.2,-0.1,-1.2,-1.6,-1.1,-0.3,0.4
2015-05-20,0.5,0.6,-0.2,-0.4,-0.4,0.4,-0.4,-1.1,-0.8,-0.0,0.7
2015-05-21,-0.5,0.2,-0.8,0.6,0.6,-0.3,-0.6,-1.5,-1.4,-0.7,-0.1

2015-05-09: canaccord maintains buy on boeing co ahead of upcoming investor day $ba 
2015-05-12: boeing cfo: usd 502b baclog represents 5 years of revenue $ba
2015-05-13: $ba - boeing president and coo muilenburg to speak at bernstein strategic decisions conference on may 27 
2015-05-14:  $ba
2015-05-15: ba gapped up +0.12 $ba last price 147.96 day high 148.25 day low 146.65 change +2.34 volume 3,495,384 today 15 
2015-05-16: largest aerospace and defense assets vs. earnings  $ba  $utx    $rtn  $txt  chart:  
Answer:+Fall