Task: Text Simplification
Input (English): references external links 121 hermione and s / 2002 -lrb- 121 -rrb- 1 , orbit data website maintained by f. marchis.
Output (English): references : external links 121 , hermione and s / 2002 -lrb- 121 -rrb- , orbit data website maintined by f. marchis.