Complex sentence: In the 1960s and 1970s the other districts of Gräfenberg became part of the borough: for example Lilling (first mentioned 1205) and Thuisbrunn (first mentioned 1007).
Split into simpler sentences: In the 1960s and 1970s the other districts of Gräfenberg became part of to the borough. For example Lilling (first mentioned 1205) and Thuisbrunn (first mentioned 1007).