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: "who plays bob duncan on good luck charlie?" whose answer is Eric Allan Kramer.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who plays bob duncan on good luck charlie
Useful Output:

Doc 1: I've gotten a number of hits from people searching about “Bob Duncan's weight loss” since the actor Eric Allan Kramer has definitely been losing weight and
Doc 2: Hi everyone. I recently had the chance to interview the ICONIC Eric Allan Kramer for my college's radio station. We discussed some of the
Doc 3:  best known for his role as Dave Rogers on The Hughleys and Bob Duncan on Good Luck Charlie from 2010–2014. More about this Pin. 1. Save. Board
Doc 4: Bridgit Mendler (Teddy Duncan) · Jason Dolley (PJ Duncan) · Bradley Steven Perry (Gabe Duncan) · Eric Allan Kramer (Bob Duncan) · Leigh-Allyn Baker
Doc 5: The character of PJ was initially called Casey. Both Eric Allan Kramer, who plays Bob Duncan, and Leigh-Allyn Baker, who plays Amy Duncan, had also