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 leaning tower of pisa closed?" whose answer is January 7, 1990.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when was the leaning tower of pisa closed
Useful Output:

Doc 1: The shockwaves emanating from Pavia were felt most intensely in Pisa and, in January 1990, the Leaning Tower was closed to the public and a new
Doc 2: In 1990 the tower was closed and all the bells silenced as engineers undertook a major straightening project.  Leaning Tower of PisaLeaning
Doc 3: This week in 1990, the Leaning Tower of Pisa was closed for repairs. The problem: it was leaning too much. Today, the tower is back where it
Doc 4: The Leaning Tower of Pisa has been closed to the public for a decade during a massive engineering operation to stop it from falling.
Doc 5: In 1990 the tower was leaning at 5.5 degrees and increasing. After that, much restoration work has been done to stop it from falling over completely. There was