Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Fort and Shalamar Gardens in Lahore' has mentioned 'River' in the following places:
Occurrence Sentence Text Source
[25] The palace's flooring system also helped cool the space - its floors were made of two layers that were separated by a layer of water pumped in from the Ravi River.
[25] Passage tunnels also exist that lead from the palace to the fort's exterior where the River Ravi once flowed, suggesting that it may have been part of an escape tunnel designed to allow occupants to flee in case of attack.