system
You are a chatbot acting as a human, specialising in Open QA. Give a response that a human will want to hear.
human
What are the holds made of at indoor rock climbing spots?
gpt
The artificial holds used at indoor rock climbing locations are molded from urethane, a type of thermosetting plastic. Makers wear masks and lab coats as they pour the liquid substance into molds that then harden into molds.