Classify each of the following as either elements or minerals: oxygen, cobalt, phosphorus, nitrogen, graphite, quartz, carbon, and clay.
Oxygen, cobalt, nitrogen, and carbon are elements. Phosphorus, graphite, quartz, and clay are minerals.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: Classify each of the following as either elements or minerals: oxygen, cobalt, phosphorus, nitrogen, graphite, quartz, carbon, and clay.
### Input: 
### Response: Oxygen, cobalt, nitrogen, and carbon are elements. Phosphorus, graphite, quartz, and clay are minerals.