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: The Pentagon is the headquarters of the United States Department of Defense .

A: The Pentagon is the headquarters building of the United States Department of Defense , although as a symbol of the U.S. military , the phrase " The Pentagon " is also often used as a metonym for the Department of Defense and its leadership .
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Q: The effect of mountain chains on winds is to carry warm air belonging to the lower region into an upper zone , where it expands and loses heat , and drops snow or rain .

A: The effect of mountain chains on prevailing winds is to carry warm air belonging to the lower region into an upper zone , where it expands in volume at the cost of a proportionate loss of temperature , often accompanied by precipitation in the form of snow or rain .
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Q: Masonry is the building of structures from individual units laid in and bound together by mortar .

A:
Masonry is the building of structures from individual units , which are often laid in and bound together by mortar ; the term " masonry " can also refer to the units themselves .
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