instruction:
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.
question:
Inert atmospheres consisting of gases such as argon , nitrogen , or helium are commonly used in chemical reaction chambers and in storage containers for oxygen-sensitive or water-sensitive substances , to prevent unwanted reactions of these substances with oxygen or water .
answer:
Inert atmospheres of gases such as dinitrogen and argon are routinely used in chemical reactions where air sensitive and water sensitive compounds are handled .


question:
A plaintiff ( Π in legal shorthand ) is the party who initiates a lawsuit ( also known as an " action " ) before a court .
answer:
A plaintiff is a person who starts a lawsuit in court .


question:
Article Seven of the United States Constitution sets the number of state ratifications necessary in order for the Constitution to take effect and prescribes the method through which the states may ratify it .
answer:

Article Seven of the United States Constitution explains what needs to happen for the Constitution to be approved .