Task: Explanation
Input (English): Question: Bryan was tasked with categorizing various fossils that the archeology team dug up. He knew they found some in rock layers near the surface and others in layers much farther below the ground. Which should he categorize as the older ones? 
 Answer: farther down fossils
Output (English): The main law is the law of superposition. This law states that deeper rock layers are older than layers closer to the surface.