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 main story is that Hyas was killed in a hunting accident , so the Hyades wept because of their grief .
Output:
The main myth concerning them is envisioned to account for their collective name and to provide an etiology for their weepy raininess : Hyas was killed in a hunting accident and the Hyades wept from their grief .