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.
<START_INST>Classify each of the following as either elements or minerals: oxygen, cobalt, phosphorus, nitrogen, graphite, quartz, carbon, and clay.<END_INST><START_CTX><END_CTX><START_A>Oxygen, cobalt, nitrogen, and carbon are elements. Phosphorus, graphite, quartz, and clay are minerals.<END_A>