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: "Which was made earlier, Khan Kluay, or Hero of the Rails?" whose answer is Khan Kluay.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Hero of the Rails construction date
Useful Output:

Doc 1: This is the 2009 DVD ISO by Lionsgate Home Entertainment.
Doc 2: Hero of the Rails (2009 Big Golden Book). by: Golden Book. Publication date: 2009-08-11. Usage: Public Domain Mark 1.0 Creative Commons License
Doc 3: Thomas was built in 1915 and Hiro's basis the D51 is made in 1936. Which means Hiro is a young engine. But despite the flaws this movie had
Doc 4: HERO OF THE RAILS. Written by. Sharon Miller. Directed by. Greg Tiernan. Produced by. Nicole Stinn. Release Date. September 8th 2009. October
Doc 5: "One summer, Thomas comes across an old abandoned engine called Hiro. Desperately in need of repair, Hiro faces the Smelters Yard, so Thomas