Task: Text Simplification
Input (English): the following two years , the raiders again won western division titles , only to lose the afl championship to the eventual super bowl winners — the new york jets -lrb- 1968 -rrb- and kansas city chiefs -lrb- 1969 -rrb-.
Output (English): for two years , the raiders won western division titles but then lost the afl championship to the new york jets in 1968 and the kansas city chiefs in 1969.