Movie reviews from Pang, Lee, and Vaithyanathan (2002)

A corpus object containing 2,000 movie reviews, one sentence per line, classified by positive or negative sentiment.  Includes a sentiment label (pos or neg).

Pang, B., Lee, L., & Vaithyanathn, S. (2002). "Thumbs Up? Sentiment Classification Using Machine Learning Techniques." Proceedings of the ACL-02 conference on Empirical methods in natural language processing: 79–86.