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.

Several radioactive substances are considered carcinogens , but their carcinogenic activity is attributed to the radiation , for example gamma rays and alpha particles , which they emit .
The carcinogens in them are caused by the radiation they release , such as gamma rays or alpha particles .

Melania Trump is the current first lady of the United States , as wife of 45th president of the United States , Donald Trump .
The current first lady is Melania Trump .

In 2005 , Steinem , Jane Fonda , and Robin Morgan co-founded the Women 's Media Center , an organization that works " to make women visible and powerful in the media " .

Steinem started the Women 's Media Centre with Jane Fonda and Robin Morgan in 2005 .