Complex sentence: In the context of United States constitutional interpretation, originalism is a way to interpret the Constitution's meaning as stable from the time of enactment, and which can only be changed by the steps set out in Article Five of the Constitution.
Split into simpler sentences: In the context of United States constitutional interpretation, originalism is a way to interpret the Constitution's meaning as stable from the time of enactment. The originalist enterprise, then, is a quest to determine the meaning of the utterances, the meaning of which can only be changed by the procedures set out in Article Five of the Constitution.