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 they start building the three gorges dam?" whose answer is December 14, 1994.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when was construction of the three gorges dam started
Useful Output:

Doc 1: Since the opening of the Three Gorges Reservoir in June 2003, it has been operating safely for 16 years. Over this period, it has contributed
Doc 2: June 1946: The first of the dams proposed by Savage begins construction, but it is halted on Aug. 3 the following year because of the Chinese
Doc 3: Initial works began in 1993. Up to the end of 1996, approximately $2.3bn was invested. The main equipment orders for the 9,800MW first phase
Doc 4: Lasting 17 years, with over 40,000 workers undertaking the dam's construction, the Three Gorges Dam is a fantastic feat of modern construction
Doc 5: The Three Gorges Dam project was completed on July 4, 2012. The dam was built for flood control, irrigation, and electricity. However, this has not come