Temporal Simultaneity Predicts Annotation Quality in Sentiment Corpora. - Idris Abdulmumin; Mokgadi Penelope Matloga; Tadesse Destaw Belay; Botshelo Kondowe; Letlhogonolo Mohleleng; Hareaipha Nkopo Letsoalo; Shamsuddeen Hassan Muhammad; Vukosi Marivate (CoRR, 2026)