In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

Ex Input:
The earliest clear statement of how chromosomes may spread in a population not because of their positive fitness effects on the individual organism , but because of their own " parasitic " nature came from the Swedish botanist and cytogeneticist Gunnar O ̈ stergren in 1945 .

Ex Output:
The Swedish botanist and cytogeneticist Gunnar O ̈ stergren in 1945 noted how chromosomes may spread in a population because of their own ” parasitic ” nature .


Ex Input:
The thoracic diaphragm , or simply the diaphragm , is a sheet of internal skeletal muscle in humans and other mammals that extends across the bottom of the thoracic cavity .

Ex Output:
The diaphragm is a muscle that is at the bottom of the ribcage of mammals .


Ex Input:
A lawn mower ( also named as mower , grass cutter or lawnmower ) is a machine utilizing one or more revolving blades to cut a grass surface to an even height .

Ex Output:

A lawn mower ( or lawnmower ) is a machine that uses blades to cut a lawn .