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 Michael James Delligatti's food creation go nationwide?" whose answer is 1968.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did the big mac go nationwide
Useful Output:

Doc 1: By 1968, a year after its debut, the Big Mac was on the menu in every McDonald's nationwide. “I've been eating them since I was a kid,” said
Doc 2: McDonald's announced this week that it's finally going to introduce the Chicken Big Mac to America “for a limited time offer starting Oct. 10, at participating
Doc 3: In August 1968, a new super-sandwich called the McDonald's Big Mac became available to customers nationwide. It had debuted the year before in
Doc 4: Since 1967, the Big Mac has been satisfying McDonald's customers with its two patties, three buns, and secret "special sauce." Here's how the
Doc 5: The Chicken Big Mac is available starting October 10 at participating locations nationwide, while