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.

the aggregate income distribution is highly concentrated towards the top , with the top 6.37 % earning roughly one third of all income , and those with upper-middle incomes control a large , though declining , share of the total earned income.
the aggregate income distribution is highly concentrated at the top , with 6.37 % earning about one third of all income , and the upper-middle class control the large though declining share of the total earned inco.