Task: Paraphrasing
Input (English): Question: Which statement best describes the Law of Superposition? 
Answer: In undisturbed layers of sedimentary rock, the lowest layers contain the older rocks. 
Sentence: The law of superposition is best described by: in undisturbed layers of sedimentary rock, the lowest layers contain the older rocks.
Output (English): In undisturbed layers of sedimentary rock, the lowest layers contain the oldest rocks.  This is the Law of Superposition.