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: "when did the dow jones industrial average start?" whose answer is May 26, 1896.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did the dow jones industrial average start
Useful Output:

Doc 1: On July 3, 1884, Charles Henry Dow began publishing his Dow Jones Average. By the time it was published daily eight months later, the index was composed of 12
Doc 2: The Wall Street Journal made its debut in July 1889 and the Dow Jones Industrial Average followed soon after in May 1896. The first iteration
Doc 3: The DJIA was developed by Charles Dow of the Wall Street Journal throughout the 1890s. A decade prior to its launch in 1896, Charles Dow had already created a
Doc 4: Although the DJIA debuted on May 26, 1896, it did not appear in The Wall Street Journal regularly until Oct. 7 of the same year. The starting
Doc 5: First calculated on May 26, 1896, the index is the second-oldest among U.S. market indices, after the Dow Jones Transportation Average. It was created by