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 was the first department store to open in the united states?" whose answer is Arnold Constable.
Each document should contain about 30 words, and these documents should contain useful information.

Query: first department store in the united states
Useful Output:

Doc 1: Marshall Field's, former department store chain whose flagship store on State Street in Chicago was for a time the largest in the world.
Doc 2: John Wanamaker carried the concept to the United States in 1875 by purchasing a rail-freight depot in his native Philadelphia and populating it
Doc 3: Strawbridge responded more assertively by opening some of the city's first branch department stores, at Suburban Square in Ardmore in 1930 and just outside
Doc 4: The following list indicates the top branch stores in 1979. The Burdine's branch at Dadeland mall south of Miami would soon enough become the #1
Doc 5: To put it less obliquely, the history of the American department store was inextricably bound up with the history of America's Jews, many of