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: "what happened to the chicago world's fair buildings?" whose answer is transformed back into parkland.
Each document should contain about 30 words, and these documents should contain useful information.

Query: what happened to the main buildings of 1893 Chicago World's Fair
Useful Output:

Doc 1: Exposition organizers separated the main exhibition buildings from the Midway Plaisance, where they displayed sideshows and curiosities. At
Doc 2: Beyond the lagoon and north pond stood the Palace of Fine Arts (one of the only Fair buildings still extant, today it houses Chicago's Museum of
Doc 3: It now has a permanent home in the Fire Museum of Greater Chicago. Firefighters Who Died at the Fire:
Doc 4: They note four remnants: the Palace of Fine Arts (rebuilt and now the Museum of Science and Industry); the Wooded Island; an original ticket booth now standing
Doc 5: Soon after, most buildings were taken down and the grounds transformed into Jackson Park. The “Chicago Wheel” was moved to North Clark Street