Complex sentence: The current municipality of Chiusi (Tuscany) partly overlaps on the Roman walled city and takes its name from it (Latin Clu-became Italian Chiu -).
Split into simpler sentences: The current municipality of Chiusi (Tuscany) partly overlaps the Roman walled city. The name "Chiusi" is derived from "Clusium" as well (Latin Clu-became Italian Chiu -).