Question: Which was made earlier, Khan Kluay, or Hero of the Rails?
Sentence (from "Khan Kluay"): Khan Kluay (Thai: ก้านกล้วย) is a 2006 Thai 3D computer-animated Action adventure comedy family feature film set during Ayutthaya-era Siam about a Thai elephant who wanders away from his mother and eventually becomes the war elephant for King Naresuan.
Relevant evidence: Yes