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 mcdonald's start serving filet o fish?" whose answer is 1962.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did mcdonald's start serving filet o fish
Useful Output:

Doc 1: 1. Lou Groen, who owned the first McDonald's restaurant in Cincinnati, Ohio, came up with the idea of a Filet-O-Fish sandwich in 1962.
Doc 2: First added to the McDonald's menu in 1965, the sandwich displays the ingenuity of one McDonald's franchise owner named Lou Groen, who saved his
Doc 3: Sparklette, a guide to restaurants in Singapore, reports that in 2008, McDonald's restaurants in Singapore were selling a Wasabi Filet-O-Fish.
Doc 4: The Filet-O-Fish has an interesting history, having been introduced in 1962 to appeal to a Roman Catholic community who didn't eat meat on
Doc 5: Thus, the fish sandwich was formally added to McDonald's menu in 1965. Evolution of Ingredients. Contrary to fast food stereotypes, McDonald's