Allergan : Form 8.3 -  #Allergan #Stock #MarketScreener https://t.co/Fc6eMgvCAQ https://t.co/4vPUhxFD8E
The tweet is indicating positive news about Allergan, which would likely lead to an increase in stock value on the market. As such, the output would be 2, which stands for a 'positive' emotion.