Occurrence of Attributes in Original Text

The text related to the cultural heritage 'The Persian Garden' has mentioned 'Irrigation' in the following places:
Occurrence Sentence Text Source
The Taj Mahal gardens embody the Persian concept of an ideal paradise garden, and were built with irrigation channels and canals from the Yamuna River.
Irrigation may be required, and may be provided via a form of tunnel called a qanat, that transports water from a local aquifer.