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
What does a geologist do?


assistant
A geologist studies rocks that come from the earth.  They evaluate the composition of rocks in order to determine how long ago layers in rock formations were formed.  They are able to give us a clear objective history of how the earth was formed and how it has adapted over time.