In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

Ex Input:
Cygnus X-1 was the first X-ray source accepted as a black hole .

Ex Output:
Cygnus X-1 ( abbreviated Cyg X-1 ) is a galactic X-ray source in the constellation Cygnus , and the first such source widely accepted to be a black hole .


Ex Input:
The International Union for Conservation of Nature 's Shark Specialist Group say that shark fin trade is causing a serious danger to the shark population .

Ex Output:
The International Union for Conservation of Nature 's Shark Specialist Group say that shark finning is widespread , and that " the rapidly expanding and largely unregulated shark fin trade represents one of the most serious threats to shark populations worldwide " .


Ex Input:
It is bounded on the west by the Gulf Stream ; on the north , by the North Atlantic Current ; on the east , by the Canary Current ; and on the south , by the North Atlantic Equatorial Current .

Ex Output:

The sea is bounded on the west by the Gulf Stream , on the north by the North Atlantic Current , on the east by the Canary Current , and on the south by the North Atlantic Equatorial Current , a clockwise-circulating system of ocean currents termed the North Atlantic Gyre .