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: A doorstop ( or door stop or doorstopper ) is a tool .

A: A doorstop ( also door stopper , door stop or door wedge ) is an object or device used to hold a door open or closed , or to prevent a door from opening too widely .
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Q: Protests and rallies also happen at the National Mall .

A: The National Mall 's status as a wide , open expanse at the heart of the capital makes it an attractive site for protests and rallies of all types .
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Q: A Christmas card is a greeting card , given around Christmas .

A:
A Christmas card is a greeting card sent as part of the traditional celebration of Christmas in order to convey between people a range of sentiments related to Christmastide and the holiday season .
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