1. Fact extraction and verification.
http://fever.ai/
2. Information operations directed at Hong Kong.
https://blog.twitter.com/en_us/topics/company/2019/information_operations_directed_at_Hong_Kong.html
3. Loughran-McDonald dictionary.
https://sraf.nd.edu/textual-analysis/resources/
4. Natural language toolkit.
https://www.nltk.org/
5. Fact-checking U.S. politics (2007).
https://www.politifact.com/truth-o-meter/