Definition: 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.
Input: A tank car or tank wagon is a type of railroad car designed to transport liquids or gases .
Output:
A tank car ( International Union of Railways ( UIC ) : tank wagon ) is a type of railroad car ( UIC : railway car ) or rolling stock designed to transport liquid and gaseous commodities .