Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Cathedral, Alcázar and Archivo de Indias in Seville' has mentioned 'World Heritage' in the following places:
Occurrence Sentence Text Source
[1] It was registered in 1987 by UNESCO as a World Heritage Site, along with the adjoining Alcxc3xa1zar palace complex and the General Archive of the Indies.
It was registered in 1987 as a World Heritage Site by UNESCO.