<human>: Question: When was copper first known to have been used?
Answer: It has a history of use that is at least 10,000 years old, and estimates of its discovery place it at 9000 BC in the Middle East; a copper pendant was found in northern Iraq that dates to 8700 BC.
 Is the question answered in a satisfactory fashion?

OPTIONS:
- yes
- no
<bot>: yes