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.

It asserts that a proposition is true because it has not yet been proven false or a proposition is false because it has not yet been proven true .
Or , that something is false if it has not yet been proved true .

Ric Flair 's " Career Threatening " match against Shawn Michaels was next , which stipulated that Flair would have to retire from wrestling if he had lost .
Ric Flair put his career on the line next against Shawn Michaels .

In 1990 , she was admitted as a partner ; at the age of 29 , she was the youngest partner within the firm , and one of the first women to hold the position .

In 1990 at the age of 29 , she became one of their first female partners .