Scrutinize the data and tweets to envisage if the closing price of $wmt will swell or contract at 2017-09-21. Please affirm either Rise or Fall.
Context: date,open,high,low,close,adj-close,inc-5,inc-10,inc-15,inc-20,inc-25,inc-30
2017-09-07,0.2,0.8,-0.1,0.0,0.0,-1.0,-1.6,-1.2,-0.7,-0.4,-0.4
2017-09-08,1.1,1.3,-1.5,-1.5,-1.5,0.7,0.1,0.3,0.7,1.1,1.1
2017-09-11,0.1,0.3,-0.5,0.3,0.3,0.6,-0.1,0.0,0.4,0.8,0.8
2017-09-12,-0.4,0.4,-0.6,0.7,0.7,-0.1,-0.6,-0.7,-0.3,0.0,0.2
2017-09-13,-0.3,1.0,-0.3,0.3,0.3,-0.4,-0.8,-1.0,-0.7,-0.3,-0.1
2017-09-14,0.1,0.2,-0.6,-0.2,-0.2,-0.3,-0.4,-0.8,-0.6,-0.2,0.1
2017-09-15,-0.7,0.5,-1.4,0.9,0.9,-0.8,-1.0,-1.5,-1.4,-1.1,-0.8
2017-09-18,0.3,1.4,-0.1,-0.5,-0.5,-0.1,-0.3,-0.9,-0.9,-0.6,-0.3
2017-09-19,0.2,0.5,-0.4,0.1,0.1,-0.1,-0.3,-0.8,-0.9,-0.7,-0.4
2017-09-20,-0.4,0.1,-0.8,0.6,0.6,-0.5,-0.8,-1.2,-1.4,-1.3,-1.0

2017-09-07: some setups i like that we'll be watching friday.  $nlnk $fit $appn $wmt $cldr $jnug $gld $iyt  more setups w/charts |the 10 rules of sam walton: success secrets for remarkable results:  $wmt #walmart
2017-09-08: $wmt is not on b/o/d watch. long targets - 79.7, 82.5, 83.7. stop: 77.6. short targets - 78.5, 76, 74.7. cover 80.1|can you beat the market buying the most popular names?    $wmt $bidu $f $vrx $gild $
2017-09-09: rt AT_USER read this great vintage stock trading article! support and pressure and their meaning!  $spy $wmt $h¡­|rt AT_USER #ai #ml #hpc #bigdata #robotics #vr #iot t hugely #disrupt #retail $amzn $w
2017-09-10: AT_USER maybe $tjx $rost $wmt $cost im not sure have to look into it|commented on  $mcd $wmt $sbux|commented on  $mcd $wmt $sbux|commented on  $mcd $wmt $sbux|is buying the most popular stocks on this
2017-09-11: investors sell shares of wal-mart stores, inc. $wmt on strength $wmt |$wmt, $wmt - investors sell shares of wal-mart stores, inc. #wmt on strength #wmt |investors sell shares of wal-mart stores, inc. 
2017-09-12: rt AT_USER icymi: our scoop today on how AT_USER is consolidating its sprawling u.s. store operations  via AT_USER|rt AT_USER u.n. ban on north korean textiles will disrupt industry and ordinary lives
2017-09-13: macd(12, 26, 9) bull crossover stocks: $baba, $bac, $hk, $ms, $usb, $wmt  |rt AT_USER $spx $nasdaq $djia $cac $dax $ftse $jpm $tsla $es_f $cl_f $gc_f $tlt $wmt $jnj $fb $googl $msft $intc $amd $twtr $
2017-09-14: the #largest companies on #earth #inspire us -  $wmt $xom $cvx $brk-a $aapl $mo $tna $cat #fridayfeeling|wal-mart stores, inc. $wmt stock rating reaffirmed by bmo capital markets |the #largest compani
2017-09-15: rt AT_USER AT_USER u gotta be kidding me! $wmt| $amzn $tgt $wmt $cost|midday most tweeted big caps, check out gambiste top 10: $wfc $jnj $wmt $wba $vz $mrk $xom $goog $msft $ko | $amzn $tgt $wmt $cost
2017-09-16: $save is the $wmt of airlines.|the little book of common sense investing:  $wmt $pg $hd $spy $brk-a|rt AT_USER 3 top e-commerce companies to buy in 2017 AT_USER #stocks $wmt, $amzn, $meli, $shop |AT_U
2017-09-17: rt AT_USER #walmart will use #nvidia and #ai to dump #aws AT_USER #stocks #investing #gpu $amzn, $wmt, $nvda |the most disturbing stat in business"... $amzn has paid $1.4b in taxes vs $64b by $wmt sin
2017-09-18: rt AT_USER "the most disturbing stat in business"... $amzn has paid $1.4b in taxes vs $64b by $wmt since 2008  AT_USER|rt AT_USER "the most disturbing stat in business"... $amzn has paid $1.4b in taxe
2017-09-19: rt AT_USER "the most disturbing stat in business"... $amzn has paid $1.4b in taxes vs $64b by $wmt since 2008  AT_USER|rt AT_USER good technicals, but also a nice setup pattern forming for $wmt   #mar
2017-09-20: toys 'r' us bankruptcy: christmas comes early for walmart, amazon  $amzn $wmt $dis $has $mat |$wmt ready for breakout? check it out on chartmill   #emmys2017 #emmys |rt AT_USER dow plunges 450 points,
Answer:
Fall