Input (grade 13): The Don River that the city is named for is a major shipping lane connecting southwestern Russia with regions to the north, and Rostov-on-Don is an important river port in both passenger-oriented and industrial shipping.
Output (grade 7): The Don River that the city is named afrer is a major shipping lane. It connects southwestern Russia with regions to the north. Rostov-on-Don is an important river port both for people and industrial shipping.