Task: Text Simplification
Input (English): heaven 's gate was an american ufo cult based in san diego , california and led by marshall applewhite -lrb- 1931-1997 -rrb- and bonnie nettles -lrb- 1927-1985 -rrb-.
Output (English): heaven 's gate used to be an american ufo cult that was in san diego , california that was led by marshall applewhite , who lived from 1931 to 1997 , and by bonnie nettles , who lived from 1927 to 1985.