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: The U-Bahn and S-Bahn public transit networks , rebuilt after the war , spanned all occupation sectors .
Output:
Berlin 's underground ( Untergrundbahn , U-Bahn ) and Berlin 's S-Bahn ( a metropolitan public transit network ) , rebuilt after the war , continued to span all occupation sectors .