Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Trans-Iranian Railway' has mentioned 'River' in the following places:
Occurrence Sentence Text Source
In order to increase the line's locomotive fleet the RE built a yard at Abadan to transfer locomotives from merchant ships to barges to take them up the River Karun and a derrick on a jetty on the Karun at Ahwaz to unload them from the barges onto the railway.