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.

[EX Q]: working group i : assesses scientific aspects of the climate system and climate change.
[EX A]: working group i : asseses scientific aspects of climate system and change.

[EX Q]: the petitions at the end of the hymn -lrb- beginning salvum fac populum tuum -rrb- are a selection of verses from the book of psalms , appended subsequently to the original hymn.
[EX A]: the petitions at the end of the hymn -lrb- beginning salvum fac populum tuum -rrb- are a selection of verses from the book of psalms , later changed to the original hymn.

[EX Q]: in 1990 , mark messier took the hart over ray bourque by a margin of two votes , the difference being a single first-place vote.
[EX A]:
in 1990 mark messier took hart over ray bourque by two votes , the difference being a first-place vote.