From Riga? (7)
I believe the answer is:
latvian
'from riga?' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for latvian that I've seen before include "like rider on tiger" , "of a recently liberated state" , "who lives in ex-Communist country?" , "One from Riga" , "Eg, native of Riga" .)