$BIIB - Biogen (BIIB) Presents Aducanumab Phase 3 Topline Results - Slideshow. Read more and get updates on any sto… https://t.co/FOEG9uCja1
### Instruction: What is the sentiment of this news? Please choose an answer from {negative/neutral/positive}
### Input: $BIIB - Biogen (BIIB) Presents Aducanumab Phase 3 Topline Results - Slideshow. Read more and get updates on any sto… https://t.co/FOEG9uCja1
### Response: neutral