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: "Adelaide Central Plaza is located in a pedestrian street mall that opened in what year ?" whose answer is 1976.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Adelaide Central Plaza pedestrian street mall opening year
Useful Output:

Doc 1: Adelaide Central Plaza expands its luxury retail offering ; 260 Collins Street 75% leased and set to reopen in October as Collins Arcade. 9 hours
Doc 2: The mall opened as Australia's first pedestrian street mall in 1976 and has 700 retail stores, 350 commercial businesses, three department stores and 15 arcades
Doc 3: Voted the nation's best retail precinct in 2021, it's one of the country's largest outdoor shopping precincts, with over 700 retail outlets it is home to the
Doc 4:  Australian specialty retailers. The Centre occupies an enviable position on Rundle Mall one of Australia's premier retail strips, directly
Doc 5: Rundle Mall is a pedestrian street mall located in Adelaide, South Australia. It was opened as a pedestrian mall in September 1976 by