Scrutinize the data and tweets to envisage if the closing price of $cmcsa will swell or contract at 2017-03-21. 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
2017-03-07,0.0,0.6,-0.4,-0.1,-0.1,0.0,0.4,0.7,0.6,0.6,0.5
2017-03-08,0.2,0.6,-0.1,-0.8,-0.8,0.6,1.0,1.4,1.4,1.4,1.4
2017-03-09,-0.5,0.2,-0.7,0.7,0.7,-0.2,0.2,0.5,0.7,0.6,0.7
2017-03-10,0.8,0.8,-0.5,-0.2,-0.2,0.0,0.2,0.6,0.8,0.7,0.8
2017-03-13,0.1,0.5,-0.4,-0.1,-0.1,0.0,0.2,0.5,0.9,0.8,0.8
2017-03-14,-0.5,0.5,-0.7,0.3,0.3,-0.3,-0.1,0.2,0.5,0.5,0.5
2017-03-15,-0.6,0.2,-0.9,0.9,0.9,-0.8,-1.0,-0.8,-0.4,-0.4,-0.4
2017-03-16,0.1,0.8,-0.3,-0.2,-0.2,-0.5,-0.7,-0.6,-0.3,-0.2,-0.3
2017-03-17,1.1,1.3,-0.2,-0.6,-0.6,0.2,-0.1,-0.1,0.2,0.4,0.3
2017-03-20,0.1,0.7,-0.2,0.1,0.1,0.2,-0.1,-0.1,0.1,0.3,0.3

2017-03-07: investors buy shares of comcast co. $cmcsa on weakness on analyst downgrade |marketcurrents: 'the voice' powers nbc to top of ratings charts  $fox $foxa $uvn $cmcsa|rt AT_USER my watch list for all st
2017-03-08: $t $vz $cmcsa $chtr $s $tmus the battle for online privacy: what you need to know  via AT_USER|rt AT_USER why t-mobile would rather merge with big cable and not sprint by AT_USER  $s $tmus $cmcsa|spri
2017-03-09: fbn rates snap hold, says facebook would 'love to buy' around $20b  $snap $fb $twtr $cmcsa|a bullish big mac (bullish) has occurred at 4:00 pm mar 09 at  $37.39 on comcast corp (cmcsa) $cmcsa get repo
2017-03-10: rt AT_USER editor's choice: 8 reasons why we're not snapping snap's ipo  AT_USER $twtr $fb $snap $cmcsa |rt AT_USER editor's choice: 8 reasons why we're not snapping snap's ipo  AT_USER $twtr $fb $sna
2017-03-11: #comcast comcast 2cps29 : salisbury residents asked for opinions in community tv station . read more:  $cmcsa|basic net neutrality asserts that internet service providers treat all internet traffic th
2017-03-12: rt AT_USER box office battle: 'kong' is king in $61m launch $twx $fox $foxa $cmcsa $cmcsk $lgf.a $lgf.b $dis $sne $via $viab |rt AT_USER box office battle: 'kong' is king in $61m launch $twx $fox $fox
2017-03-13: $cmcsa:us marshall wace llp increases position in comcast co. (cmcsa) #comcast corp   #nasdaq|$cmcsa is in macd golden cross winning 62.07% in the past. |disney world and universal orlando kick off th
2017-03-14: an antenna is required to be mounted on the house to get the propagation through the house that¡¯s required" says #comcast.   $cmcsa|dispute arises over timing of #megynkelly's #fox exit  $fox $foxa $
2017-03-15: s&amp;p100 #stocks trend $gd $msft $cat $fdx $pcln $intc $ups $foxa $mrk $cmcsa $hal $dow $dd $t $emr $usb $all  @ |the northeast regional council of carpenters partners with spectra by comcast s $ccv
2017-03-16:  AT_USER leader boards showing you exactly who is making bank! all verified! $xrx $ha $nem $cmcsa $baba $jd|$s partnering with $dish to offer discounted sling is a big deal.  once millimeter wave-base
2017-03-17: $cmcsa breaking out! see some analysis  #action #gst|$avid expects to report within 15 days, gives them up to march 31 to be acquired for cheap, come on $adbe, $cmcsa make a move on this|leahanne: 03/
2017-03-18: $nflx p/e is 345 = $200 million in annual profit = $62b market cap. $cmcsa 21p/e = $15 billion profit = $177b market cap. $nflx = no profit!|rt AT_USER snl's 7 best 'weekend update' skits  $cmcsa|rt A
2017-03-19: AT_USER you might be on a cable channel soon too... $cmcsa you'll get more viewers.... how many subs do you have? just wondering.|rt AT_USER box office battle: 'beauty and the beast' breaks records in
2017-03-20: rt AT_USER benzinga's option alert recap from march 20  $bkd $cmcsa $gpro $gps $mpc $shld $scs $twtr $m $nvda $nke|$spy $cmcsa $qqq options have the largest change in volume. free options screener. |r
Answer:
Fall