Question: Who was the son of the ruling king of the second largest city in Afghanistan
Sentence (from "Kandahar"): Kandahar ( ) or Qandahar (Pashto: کندهار‎ "Kandahār" ; Dari: قندهار‎ ‎ "Qandahār" , known in older literature as Candahar) is the second-largest city in Afghanistan, with a population of about 491,500 as of 2012 .
Relevant evidence: Yes