Original sentence: Pro7 also produces many shows in Studios in Cologne (i.Several radio and television stations, including Westdeutscher Rundfunk (WDR), RTL and VOX, are based in the city.TV Total).The city also hosts the Cologne Comedy Festival, which is considered to be the largest comedy festival in mainland Europe
Edited sentence: Both Pro7 and SAT1 produce TV shows in Cologne as well.Further, the city hosts the Cologne Comedy Festival, which is considered to be the largest comedy festival in mainland Europe.Several radio and television stations, including Westdeutscher Rundfunk (WDR), RTL and VOX, have their headquarters in the city