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: "where did the name gilded age come from?" whose answer is Mark Twain's 1873 novel.
Each document should contain about 30 words, and these documents should contain useful information.

Query: origin of the term "Gilded Age"
Useful Output:

Doc 1: Mark Twain. The author coined the term when he published his satirical novel The Gilded Age: A Tale of Today, which was first published in 1873.
Doc 2: “The Gilded Age” is the term used to describe the tumultuous years between the Civil War and the turn of the 20th century. The Gilded Age: A
Doc 3: The Gilded Age (1870-1900) was a time of rapid industrialization and wealth creation in America, led by tycoons like Rockefeller and Vanderbilt.
Doc 4: Though “The Gilded Age” is largely fictional, its characters' experiences aptly reflect the reality of late 19th-century urban living. And no
Doc 5: Mark Twain coined the term “Gilded Age” in a novel satirizing the corruption that lay behind America's new prosperity. The name stuck, but