With the help of the data and tweets given, can you forecast whether the closing price of $mdt will climb or drop at 2015-07-21? Please state either Rise or Fall.
Context: date,open,high,low,close,adj-close,inc-5,inc-10,inc-15,inc-20,inc-25,inc-30
2015-07-07,0.2,0.5,-1.7,-0.1,-0.1,0.5,1.3,2.0,2.1,2.3,2.6
2015-07-08,0.0,0.9,-0.1,-0.8,-0.8,1.0,1.7,2.6,2.9,3.0,3.3
2015-07-09,1.0,1.5,0.0,0.3,0.3,0.4,1.1,2.1,2.3,2.4,2.8
2015-07-10,-0.4,0.1,-0.7,1.8,1.8,-1.2,-0.8,0.2,0.5,0.6,0.9
2015-07-13,-0.5,0.4,-0.5,1.1,1.1,-1.8,-1.9,-1.0,-0.6,-0.5,-0.2
2015-07-14,-0.7,0.0,-0.9,1.0,1.0,-2.1,-2.4,-2.0,-1.5,-1.3,-1.2
2015-07-15,-0.1,0.3,-0.3,0.1,0.1,-1.4,-2.3,-2.1,-1.5,-1.3,-1.3
2015-07-16,-0.2,0.3,-0.3,1.1,1.1,-1.5,-3.0,-3.0,-2.5,-2.4,-2.3
2015-07-17,-0.1,0.1,-0.9,0.1,0.1,-1.0,-2.7,-3.0,-2.6,-2.5,-2.4
2015-07-20,0.1,0.2,-0.4,0.1,0.1,-0.6,-2.4,-3.0,-2.7,-2.5,-2.5

2015-07-13: $mdt: medtronic to acquire rf surgical systems for ~$235 mln 
2015-07-15: ung united states natural gas fund chart$ung $aci $syn $mdt #ung #investing #stock
2015-07-19: rt AT_USER medtronic: the next acquisition - $mdt $evar |aortfix : a unique device.excellent research report $evargreat buyop w/high likelihood of buyout$mdt$elgx 
Answer:
Fall