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:
In mathematics , and more specifically in graph theory , a graph is a structure amounting to a set of objects in which some pairs of the objects are in some sense " related " .

Ex Output:
In mathematics , a graph is used to show how things are connected .

Ex Input:
The Orto botanico di Pisa , also known as the Orto Botanico dell 'Universita di Pisa , is a botanical garden operated by the University of Pisa , and located at via Luca Ghini 5 , Pisa , Italy .

Ex Output:
The garden is at via Luca Ghini 5 , Pisa , Italy .

Ex Input:
The Chinese Academy of Sciences ( CAS ; ) , with historical origins in the Academia Sinica during the Republican era and formerly also known by that name , is the national academy for the natural sciences of the People 's Republic of China ( PRC ) .

Ex Output:
The Chinese Academy of Sciences ( CAS , formerly : Academia Sinica ) is the supreme institution for all the natural science organisations in China .