Task: Text Simplification
Input (English): robert leroy johnson -lrb- may 8 , 1911 – august 16 , 1938 -rrb- was an american blues musician , among the most famous of delta blues musicians.
Output (English): robert leroy johnson -lrb- may 8 , 1911 – august 16 , 1938 -rrb- , an american blues musician , was the most famous among the delta blues musicia.