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.

[EX Q]: The retina does not feel pain , so damage may not be felt for hours .
[EX A]: The retina has no sensitivity to pain , and the effects of retinal damage may not appear for hours , so there is no warning that injury is occurring .

[EX Q]: A crystal is a solid whose molecules ( or atoms ) are arranged in a repeating pattern .
[EX A]: A crystal or crystalline solid is a solid material whose constituents ( such as atoms , molecules , or ions ) are arranged in a highly ordered microscopic structure , forming a crystal lattice that extends in all directions .

[EX Q]: Sterling banknotes are the banknotes in circulation in the United Kingdom and its related territories .
[EX A]:
Sterling banknotes are the banknotes in circulation in the United Kingdom and its related territories , denominated in pounds sterling ( symbol : £ ; ISO 4217 currency code GBP Great Britain pound ) .