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: "the guy who plays leonard on big bang theory?" whose answer is John Mark Galecki.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who plays leonard on big bang theory
Useful Output:

Doc 1: Johnny Galecki, who played Leonard on CBS's smash hit sitcom The Big Bang Theory, once had an idea for a spin-off that would have been shot in a
Doc 2: Jim Parsons (Sheldon Cooper), Kaley Cuoco (Penny Teller), Johnny Galecki (Leonard Hofstadter), Simon Helberg (Howard Wolowitz), Kunal Nayyar (Raj Koothrappali)
Doc 3: Johnny Galecki is best known for two roles. The first as Leonard Hofstadter on the long-running sitcom The Big Bang Theory. And the second is as middle child
Doc 4: For more than a decade, Galecki and Cuoco played Leonard and Penny Hofstadter on the CBS sitcom The Big Bang Theory. The show ended its 12
Doc 5: The Big Bang theory stars Johnny Galecki as Leonard Hofstadter, but the role almost went to John Ross Bowie, who plays rival nerd Barry