Scrutinize the data and tweets to envisage if the closing price of $nvs will swell or contract at 2015-08-17. 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
2015-08-03,0.1,0.1,-0.7,0.6,0.6,-0.8,-1.4,-0.5,-1.2,-2.0,-2.1
2015-08-04,0.6,0.7,-0.2,-0.8,-0.8,0.1,-0.6,0.1,-0.2,-1.1,-1.3
2015-08-05,-0.4,0.4,-0.4,-0.3,-0.3,0.4,-0.1,0.3,0.3,-0.6,-1.0
2015-08-06,1.0,1.1,-0.3,-0.9,-0.9,1.1,0.7,1.0,1.3,0.5,-0.1
2015-08-07,-0.5,0.1,-0.9,-0.1,-0.1,0.9,0.8,0.9,1.4,0.7,0.0
2015-08-10,-0.8,0.2,-0.8,0.8,0.8,-0.1,0.2,-0.1,0.6,0.1,-0.6
2015-08-11,0.9,1.0,-0.3,-0.9,-0.9,0.5,1.0,0.7,1.3,1.1,0.4
2015-08-12,-0.4,0.1,-1.3,-0.0,-0.0,0.3,0.9,0.8,1.2,1.2,0.5
2015-08-13,0.0,0.3,-0.4,0.1,0.1,0.1,0.7,0.6,0.9,1.2,0.6
2015-08-14,-0.0,0.1,-0.4,0.3,0.3,-0.1,0.3,0.3,0.4,0.9,0.3

2015-08-04: "jet life" penny stock$: $epgl weekly chart $nvs #autofocus #bioniclens 
2015-08-05: rt AT_USER #fda to update $nvs' gilenya label with brain-infection risk warning 
Answer:
Scrutinize the data and tweets to envisage if the closing price of $nvs will swell or contract at 2015-08-17. 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
2015-08-03,0.1,0.1,-0.7,0.6,0.6,-0.8,-1.4,-0.5,-1.2,-2.0,-2.1
2015-08-04,0.6,0.7,-0.2,-0.8,-0.8,0.1,-0.6,0.1,-0.2,-1.1,-1.3
2015-08-05,-0.4,0.4,-0.4,-0.3,-0.3,0.4,-0.1,0.3,0.3,-0.6,-1.0
2015-08-06,1.0,1.1,-0.3,-0.9,-0.9,1.1,0.7,1.0,1.3,0.5,-0.1
2015-08-07,-0.5,0.1,-0.9,-0.1,-0.1,0.9,0.8,0.9,1.4,0.7,0.0
2015-08-10,-0.8,0.2,-0.8,0.8,0.8,-0.1,0.2,-0.1,0.6,0.1,-0.6
2015-08-11,0.9,1.0,-0.3,-0.9,-0.9,0.5,1.0,0.7,1.3,1.1,0.4
2015-08-12,-0.4,0.1,-1.3,-0.0,-0.0,0.3,0.9,0.8,1.2,1.2,0.5
2015-08-13,0.0,0.3,-0.4,0.1,0.1,0.1,0.7,0.6,0.9,1.2,0.6
2015-08-14,-0.0,0.1,-0.4,0.3,0.3,-0.1,0.3,0.3,0.4,0.9,0.3

2015-08-04: "jet life" penny stock$: $epgl weekly chart $nvs #autofocus #bioniclens 
2015-08-05: rt AT_USER #fda to update $nvs' gilenya label with brain-infection risk warning 
Answer:+Rise