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 was the pyramid added to the louvre?" whose answer is in 1989.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when was the pyramid added to the louvre
Useful Output:

Doc 1: The Louvre Pyramid was first constructed in the 21st century as a fortress, what is known today as the Louvre Museum which served at a royal
Doc 2: But Mitterrand and his supporters prevailed and the pyramid was finished in 1989. It serves as the Louvre's entrance, and a staircase leads
Doc 3: President François Mitterrand commissioned a the glass pyramid as new entrance, designed by architect I.M. Pei in 1984 and completed in 1989.
Doc 4: The 71-foot-high pyramid was, in the words of the AIA, a “modernist affront” when its design was announced in the early 1980s. Time, however,
Doc 5: Pei's design of the Louvre addition implemented a large glass and steel pyramid that is surrounded by three smaller triangles that provide