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.

[Q]: 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 " .
[A]: In mathematics , a graph is used to show how things are connected .


[Q]: Pelagia noctiluca is a jellyfish in the family Pelagiidae and the only currently recognized species in its genus .
[A]: Pelagia noctiluca is a jellyfish .


[Q]: Franklin Delano Roosevelt ( , ; January 30 , 1882 – April 12 , 1945 ) , often referred to by the initials FDR , was an American statesman and political leader who served as the 32nd president of the United States from 1933 until his death in 1945 .
[A]:
Franklin Delano Roosevelt ( January 30 , 1882 - April 12 , 1945 ) was the 32nd President of the United States from 1933 until his death in 1945 .