Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Buddhist Monuments at Sanchi' has mentioned 'Island' in the following places:
Occurrence Sentence Text Source
After Ashoka's accession, Mahendra headed a Buddhist mission, sent probably under the auspices of the Emperor, to Sri Lanka, and that before setting out to the island he visited his mother at Chetiyagiri near Vidisa, thought to be Sanchi.