1. Facebook, “Facebook”, 2018. [Online]. Available: https://facebook.com.
2. Twitter, “Twitter”, 2018. [Online]. Available: https://twitter.com/.
3. Instagram, “Instagram”, 2018. [Online]. Available: https://www.instagram.com/.
4. LinkedIn, “LinkedIn”, 2018. [Online]. Available: https://www.linkedin.com.
5. Sentiment Analysis and Subjectivity;Liu,2010