Lisa Deringer and Olga Rudolf, colleagues from the University of Jena, working in the project Towards a typology of human impersonal pronouns. Theoretical, comparative and empirical studies (abbreviated as ImProType and led by Volker Gast) asked me to fill a questionnaire and translate various impersonal structures into Polish. They build up a database with approx. 60 languages and Polish is intended to be included in the database as one of the languages. I’m glad I can help and use the database as well 😀