Complex sentence: The competition was established in the 2007--08 season, after a proposal by Sporting CP and Boavista was approved by LPFP member clubs at a meeting in Porto, on 28 November 2006.
Split into simpler sentences: The competition was established in the 2007--08 season, after a proposal by Sporting CP and Boavista. It was approved by LPFP member clubs at a meeting in Porto, on 28 November 2006.