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]: Many people call all sparkling wines " champagne " but according to trade laws , only sparkling wine from the Champagne region can be called champagne .
[EX A]: Many people use the term " Champagne " as a generic term for sparkling wine but in some countries , it is illegal to label any product " Champagne " unless it both comes from the Champagne region and is produced under the rules of the appellation .

[EX Q]: Portland stone is hard enough to resist weathering but soft enough to be worked ( cut and carved ) by stonemasons .
[EX A]: The degree of cementation in Portland stone is such that the stone is sufficiently well cemented to allow it to resist weathering , but not so well cemented that it ca n't be readily worked ( cut and carved ) by masons .

[EX Q]: This evidence , and " Microraptor " and the troodontid " Anchiornis " , suggests the common ancestor of dromaeosaurs , troodontids , and birds the ' ancestral paravian ' may have been very small , at around 65 cm in length and 600 to 700 grams of mass .
[EX A]:
This evidence , combined with the small size of other primitive relatives such as " Microraptor " and the troodontid " Anchiornis " , indicates that the common ancestor of dromaeosaurids , troodontids , and birds ( which is called the ancestral paravian ) may have been very small , at around 65 cm in length and 600 to 700 grams of mass .