Beck, Tilman; Lee, Ji-Ung; Viehmann, Christina; Maurer, Marcus; Quiring, Oliver; Gurevych, Iryna. Opinion Mining Corpus on German Tweets about the Covid-19 Pandemic. (2021-08). Creative Commons Attribution 4.0. NLP, Opinion Mining, Social Media, Covid-19, 409-06 Informationssysteme, Prozess- und Wissensmanagement, 004. Technical University of Darmstadt. https://tudatalib.ulb.tu-darmstadt.de/handle/tudatalib/2780