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: riaa website although total worldwide album sales are not calculated by any single entity , as of 2004 several industry sources estimated rush 's total worldwide album sales at over 40 million units.

SOLUTION: although total worldwide album sales are not calculated by any single entity , as of 2004 several industry sources estimated rush 's total worldwide album sales at over 40 million units.

PROBLEM: in order to accomplish their objective , surveyors use elements of geometry , engineering , trigonometry , mathematics , physics , and law.

SOLUTION: in order to complete their objective , surveyors use elements of geometry , engineering , trigonometry , mathematics , physics , and law.

PROBLEM: surnames aaron schock , member of the u.s. house of representatives representing the 18th district of illinois.

SOLUTION:
aaron schock is a member of the u.s. house of representatives representing the 18th district of illinois.