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: "Pennsylvania Route 51 includes the West Mifflin mall that was opened in what year?" whose answer is 1979.
Each document should contain about 30 words, and these documents should contain useful information.

Query: West Mifflin mall opened year
Useful Output:

Doc 1: The 1.3-million-square-foot mall opened in 1979. Moonbeam obtained the property in 2013 and is current on its taxes. The Las Vegas-based
Doc 2: The 1.3 million-square-foot mall opened in 1979, developed by the Edward J.  This year, officials had hoped a proposal by Menards, a
Doc 3: The demolition began last year and is expected to finish sometime in 2026. The mall has been closed since 2019. JCPenney, the last remaining
Doc 4:  Mall in West Mifflin  The History of Century III Mall in West Mifflin, Pennsylvania - Opened October, 1979. 5.3K views · 3 years ago #
Doc 5: Century III Mall is a defunct enclosed shopping mall located along Route 51 in West Mifflin, Pennsylvania, approximately 10 miles southeast