You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "when did unesco declared paharpur as a world heritage area?" whose answer is 1985.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did unesco declare paharpur as a world heritage site
Useful Output:

Doc 1: Paharpur Buddhist Monastery, also known as the somapUra mahavihara, was declared a world heritage site in 1985. buchanan Hamilton spotted this
Doc 2:  cultural arm of the United Nations, has declared to be World Heritage Sites.  Historic Mosque City of Bagerhat; Ruins of the Buddhist Vihara at Paharpur
Doc 3: Ruins of the Buddhist Vihara at Paharpur  Is a UNESCO World Heritage site located in Bangladesh. The ruins are the remains of an ancient Buddhist monastery
Doc 4: The World Heritage Convention provides support to the States Parties, especially the most vulnerable ones, in developing relevant policies and
Doc 5: UNESCO declared Paharpur as World Heritage Sites in Bangladesh. 2nd Day: Taking breakfast, we will travel to ruins of the Buddhist Vihara at Paharpur. Once