Complex sentence: RTBF (the public broadcaster) which has the TV channels La Une, La Deux and La Trois, as well as RTL Group (the main commercial TV group in the south) which runs the channels RTL-TVI, Club RTL and Plug RTL.
Split into simpler sentences: RTBF (the public broadcaster) which has the TV channels la une, la deux and la trois. RTL group (the main commercial TV group in the south) which runs the channels RTL-TVi, Club RTL and Plug RTL.