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.

Positive Example 1 -
Input: a georgian inscription around the drum attests his name.
Output: there is a georgian inscription around the drum to confirm his name.

Positive Example 2 -
Input: it is particularly famous for the cultivation of kiwifruit.
Output: it is mostly famous for the growing of kiwifruit.

Negative Example 1 -
Input: a hunting dog refers to any dog who assists humans in hunting.
Output: a hunting dog is a dog that refers humans in hunting.

Negative Example 2 -
Input: in return , romania ceded three southern districts of bessarabia to russia and acquired dobruja.
Output: in return , romania ceded three southern districts of bessarabia to russia and acquired dobruja.

Now complete the following example -
Input: in mathematics , a riemann sum is a method for approximating the total area underneath a curve on a graph , otherwise known as an integral.
Output: 



Output:
in math , a rieman sum is a way to estimate the area under a graph curve , known as an integr.
known as an integral in mathematics , a riemann sum is a method for approximating the total area underneath a curve on a graph.
in math , a riemann sum is a way to approximate the are underneath a curve on a graph , also known as an integral.
in mathematics , a riemann sum is a method for estimating the total area under a curve on a graph . it is also known as integral.
an integral can be approximated by using the rieman sum.
1 . in mathematics , a riemann sum is a formula for estimating the total area below a curve on a graph , also called as an integral.