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.

[Q]: An epicalyx , an additional whorl around the calyx of a single flower , is a modification of bracteoles .
[A]: An epicalyx , which forms an additional whorl around the calyx of a single flower , is a modification of bracteoles In other words , the epicalyx is a " group of bracts resembling a calyx " or " bracteoles forming a whorl outer to the calyx " .

[Q]: In this game , a dragon named Red uses evil Dark Gems to poison the Dragon Worlds .
[A]: The game revolves around an evil plot by the villain Red , a former Dragon Elder , who begins to plant Dark Gems around the Dragon Realms , sucking the life out of these worlds .

[Q]: Cowry shells ( or cowrie ) , are marine snails of the family Cypraeidae .
[A]:
Cowrie or cowry ( plural cowries ) is the common name for a group of small to large sea snails , marine gastropod mollusks in the family Cypraeidae , the cowries .