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 dr phil first appear on oprah?" whose answer is 1998.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did dr phil first appear on oprah
Useful Output:

Doc 1: As he reflected on the early days of their friendship, McGraw recalled how he used to make frequent appearances on Winfrey's namesake talk show.
Doc 2: “Oprah and I met in the late '90s when she was on trial, and I was on the trial team, then I started doing the show, and started doing the show
Doc 3: She was so impressed, she invited him onto her show. His appearance was a success and he began to appear weekly from 1998 as a relationship and
Doc 4: The Oprah Winfrey Show (later Oprah; syndicated, 1986–2011) did the same a year later.  Oprah Winfrey Show and with his own daytime talk show, Dr. Phil. McGraw
Doc 5: In 2006 the Oprah & Friends channel debuted on satellite radio. She brokered a partnership with Discovery Communications in 2008, through which