You will be given a definition of a task first, then some input of the task.
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.

The Partnership for Public Warning states that a basic problem is that many parts of existing warning systems do not work together .
Output:
According to the Partnership for Public Warning , a fundamental problem is the lack of technical and procedural interoperability among warning originators , system providers , delivery systems , and warning recipients .