Contemplate the data and tweets to guess whether the closing price of $slb will surge or decline at 2015-05-21. 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
2015-05-07,1.5,1.6,-0.7,-2.2,-2.2,2.1,2.6,2.5,1.8,0.6,-0.7
2015-05-08,-1.2,0.1,-2.5,2.4,2.4,-0.5,0.3,0.1,-0.4,-1.5,-2.7
2015-05-11,1.8,1.8,-0.1,-0.7,-0.7,-0.0,0.9,0.7,0.5,-0.5,-1.7
2015-05-12,-1.2,0.5,-1.4,0.8,0.8,-0.7,0.1,0.1,-0.1,-1.0,-2.2
2015-05-13,0.7,0.7,-0.8,0.0,0.0,-0.7,-0.1,0.0,-0.1,-0.8,-1.9
2015-05-14,0.7,1.2,-0.3,-0.4,-0.4,0.1,0.0,0.3,0.3,-0.2,-1.3
2015-05-15,-0.3,0.6,-1.1,-0.0,-0.0,0.1,-0.0,0.4,0.3,-0.1,-1.0
2015-05-18,-0.9,0.3,-1.2,0.7,0.7,-0.4,-0.7,-0.2,-0.3,-0.5,-1.4
2015-05-19,1.3,1.3,-0.7,-2.4,-2.4,1.6,1.5,2.0,2.0,2.0,1.2
2015-05-20,-0.1,0.5,-1.0,0.2,0.2,1.0,1.1,1.6,1.7,1.7,1.1

2015-05-12: $slb:schlumberger n.v. short interest drops by -26%:
2015-05-16: admd advanced medical isotope corp. market capclick here -&gt; trending $admd $swks $sd $slb #admd #nasdaq #invest|slb schlumberger ltd. stock forumclick here -&gt; trending $slb $apc $uup $mnga #slb 
2015-05-17: slb schlumberger ltd. 52wk highclick here -&gt; trending $slb $aig $sbux $fcx #slb #tradeideas #invest|slb schlumberger ltd. dividendclick here -&gt; trending $slb $amzn $ibm $xlf #slb #stocks #stock|
2015-05-18: rt AT_USER nyse drops in shorts:$pbr $twtr $pfe $nbg $mgm $wft $fcx $v $tsm $slb $infy $x $cop $emc $cnx $mbly $p 
Answer:
Contemplate the data and tweets to guess whether the closing price of $slb will surge or decline at 2015-05-21. 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
2015-05-07,1.5,1.6,-0.7,-2.2,-2.2,2.1,2.6,2.5,1.8,0.6,-0.7
2015-05-08,-1.2,0.1,-2.5,2.4,2.4,-0.5,0.3,0.1,-0.4,-1.5,-2.7
2015-05-11,1.8,1.8,-0.1,-0.7,-0.7,-0.0,0.9,0.7,0.5,-0.5,-1.7
2015-05-12,-1.2,0.5,-1.4,0.8,0.8,-0.7,0.1,0.1,-0.1,-1.0,-2.2
2015-05-13,0.7,0.7,-0.8,0.0,0.0,-0.7,-0.1,0.0,-0.1,-0.8,-1.9
2015-05-14,0.7,1.2,-0.3,-0.4,-0.4,0.1,0.0,0.3,0.3,-0.2,-1.3
2015-05-15,-0.3,0.6,-1.1,-0.0,-0.0,0.1,-0.0,0.4,0.3,-0.1,-1.0
2015-05-18,-0.9,0.3,-1.2,0.7,0.7,-0.4,-0.7,-0.2,-0.3,-0.5,-1.4
2015-05-19,1.3,1.3,-0.7,-2.4,-2.4,1.6,1.5,2.0,2.0,2.0,1.2
2015-05-20,-0.1,0.5,-1.0,0.2,0.2,1.0,1.1,1.6,1.7,1.7,1.1

2015-05-12: $slb:schlumberger n.v. short interest drops by -26%:
2015-05-16: admd advanced medical isotope corp. market capclick here -&gt; trending $admd $swks $sd $slb #admd #nasdaq #invest|slb schlumberger ltd. stock forumclick here -&gt; trending $slb $apc $uup $mnga #slb 
2015-05-17: slb schlumberger ltd. 52wk highclick here -&gt; trending $slb $aig $sbux $fcx #slb #tradeideas #invest|slb schlumberger ltd. dividendclick here -&gt; trending $slb $amzn $ibm $xlf #slb #stocks #stock|
2015-05-18: rt AT_USER nyse drops in shorts:$pbr $twtr $pfe $nbg $mgm $wft $fcx $v $tsm $slb $infy $x $cop $emc $cnx $mbly $p 
Answer:+Rise