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 penny on the big bang theory?" whose answer is Kaley Christine Cuoco.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who plays penny on the big bang theory
Useful Output:

Doc 1: Show creator Chuck Lorre says the original Penny on "The Big Bang Theory" was "hated" by audiences. But the audience's intense dislike for
Doc 2: Kaley Cuoco didn't play Penny in the unaired pilot of "The Big Bang Theory." The role went to Amanda Walsh, who played Katie, the show's
Doc 3: Kaley Cuoco HATED Penny's Big Bang Theory ENDING.. · Comments.
Doc 4: Kaley Cuoco said she would have played her "Big Bang Theory" character Penny for "20 years" if the show hadn't ended.
Doc 5: In an alternate universe, Marisa Tomei won the role of Penny on The Big Bang Theory instead of Kaley Cuoco. An excerpt of Jessica Radloff's