"Strangers in a new culture see only what they know": Evaluating Effectiveness of GPT-4 Omni for Detecting Cross-Cultural Communication Norm Violations. - Tzu-Yu Weng; Hanna AlZughbi; Isaac Rabago; Erin Arévalo Chaves; Erik Vagil; Nancy Fulda; Erin Ash; Mainack Mondal; Bart P. Knijnenburg; Xinru Page (UMAP, 2025)