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:
The zlib License is an open source software license .

Ex Output:
The zlib license has been approved by the Free Software Foundation ( FSF ) as a free software license , and by the Open Source Initiative ( OSI ) as an open source license .


Ex Input:
During the American Civil War , the river , with few convenient fords and fewer bridges , provided a barrier and defensive line .

Ex Output:
During the American Civil War , the river , with few convenient fords and fewer bridges , provided a barrier and defensive line behind which movements of troops could be accomplished with little fear of attack from the river-side flank .


Ex Input:
It was the eighth Bound for Glory event that TNA held .

Ex Output:

Bound for Glory was the eighth annual Bound for Glory professional wrestling pay-per-view ( PPV ) event produced by Total Nonstop Action Wrestling ( TNA ) .