system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
Classify each of the following as either elements or minerals: oxygen, cobalt, phosphorus, nitrogen, graphite, quartz, carbon, and clay.


assistant
Oxygen, cobalt, nitrogen, and carbon are elements. Phosphorus, graphite, quartz, and clay are minerals.