TASK DEFINITION: In this task, you're given a sentence and your task is to generate a simplified sentence that focuses on lexical paraphrasing from the original sentence given in the input.
PROBLEM: there are currently over six hundred linux distributions.

SOLUTION: presently , there are over six hundred kinds of linux.

PROBLEM: during the 1980s and 1990s , the university devoted substantial resources to renovating its massive hospital complex and improving the academic facilities on the north campus.

SOLUTION: during the 1980s and 1990s , the university devoted significant resources to renovating its huge hospital complex and improving the academic facilities on the north campus.

PROBLEM: the aes ciphers have been analyzed extensively and are now used worldwide , as was the case with its predecessor , the data encryption standard -lrb- des -rrb-.

SOLUTION:
like its predecessor , the data encryption standard -lrb- des -rrb- , after an extensive analysis , the aes ciphers are in use worldwide n.