Research on the automatic classification of movie or product reviews as positive or negative (e.g., (Pang et al., 2002;Morinaga et al., 2002;Turney and Littman, 2003;Nasukawa and Yi, 2003;Mullen and Collier, 2004;Beineke et al., 2004;Hu and Liu, 2004)) is perhaps the most similar to our work.
sentences that are presenting common background information or introducing an issue and that do not strongly convey any perspective should look similar whether they are in Palestinian or Israeli documents.