context: Old Dongola is a Sudanese town located on the eastern bank of the Nile River, in the northern state of Sudan, and was an important center in the Nubia countries in the Middle Ages where it was the capital of the Nubian kingdom of Makara. It is an important city in Islamic history in Sudan. Some Muslim scholars call it the bride of the Qur’an. The mosque in it is considered one of the oldest mosques in Africa. [1]
question: Where is the old city of Dongola?
answers.text: on the eastern bank of the Nile River, in the northern state of Sudan