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: Metropolitan Manila , commonly known as Metro Manila , is the National Capital Region ( NCR ) of the Philippines .
A: 
Metropolitan Manila ( often shortened to as Metro Manila ; ) , officially the National Capital Region ( NCR ) , is the seat of government and one of the three defined metropolitan areas of the Philippines .