Teacher: In this task, you will be presented with a question in Persian. Based on the knowledge you need to answer the question, classify the question into "math_and_logic", "literature", or "common_knowledge".
Teacher: Now, understand the problem? If you are still confused, see the following example:
عدد 30 را بر نیم تقسیم می کنیم و سپس عدد 10 را به آن اضافه می کنیم. نتیجه کدام گزینه است؟
Solution: math_and_logic
Reason: This is a good example. You need mathematical knowledge to answer this question.

Now, solve this instance: حدود چند هزار سال از عمر خط می گذرد؟
Student:
common_knowledge