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 twin towers built in new york?" whose answer is 1973.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when were the twin towers of the world trade center built in new york
Useful Output:

Doc 1: The New York State Legislature originally approved the idea in 1943, but concrete plans did not materialize until the 1960s. The deal that
Doc 2: The World Trade Center Site right before construction of the North Tower began (April 16, 1968). construction. The site under construction also
Doc 3: View photographs of the 1969 construction of the New York City World Trade Center.
Doc 4: Built primarily between 1966 and 1975, it was dedicated on April 4, 1973, and was destroyed during the September 11 attacks in 2001.
Doc 5: Designed by architect Minoru Yamasaki and officially opened in April 1973, the towers were very briefly the world's tallest buildings until