Complex sentence: The result of this was that the Odelsting-the larger of the two divisions of the Storting-decided on November 24,1947 that Vestfold and Buskerud were to become a new diocese, and that Tønsberg would be the cathedral city of the Diocese of Tunsberg.
Split into simpler sentences: The result of this was that the Odelsting-the larger of the two divisions of the Storting-decided on November 24,1947 that Vestfold and Buskerud were to become a new diocese. Additionally it was decided that Tønsberg would be the new cathedral city of the Diocese of Tunsberg.