If the Nepalese is in Track 3, the Chinese in Track 1, then the Indian could be in:

There are five tracks T1 T2 T3 T4 T5
Chines ---Indian (Chinese is let o Indian)
Chinese Indian and the Iraqi Nepalese Iraqi/Indian Englishmen.
Hence the Indian and the Iraqi should be in track 2 and track 4 in any order.