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".
Q: نهاد  در مصراع  اول بيت زير كدام است 
رشته اي درگردنم افكنده دوست 
مي برد آن جا كه خاطر خواه اوست
A: 
literature