Detailed Instructions: 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 Commonwealth Parliament keeps the power to overturn territorial legislation and to give or take powers .
A:
These territories ' legislatures , their Assemblies , exercise powers devolved to them by the Commonwealth ; the Commonwealth Parliament remains able to override their legislation and to alter their powers .