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 Mitchell River created silt jetties which run into Lake King for several kilometres .
Output:
Silt deposited by this process forms into long jetties which can run many kilometres into a lake , as exemplified by the Mitchell River silt jetties that run into Lake King .