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 valley girl accent come from?" whose answer is California.
Each document should contain about 30 words, and these documents should contain useful information.

Query: origin of valley girl accent
Useful Output:

Doc 1: In the U.S., the history might involve the people of Scots-Irish background who migrated to California during the Dust Bowl era in the 1930s,
Doc 2: As The Sundial notes, the stereotype was defined by tween and teen girls from Southern California's affluent San Fernando Valley. Often depicted
Doc 3: Vowel shifting, when people change the pronun- ciation of their vowel sounds, has recently been identified with the Valley Girl dialect,.
Doc 4: Most commonly known as #valleygirl speech. #linguistic features include vocal fry, the quotative and non-quotative "like", slang, and uptalk.
Doc 5: Explore the linguistic characteristics of frat boys and valley girls through sociological analysis. Dive into the distinctive accents and coded language.