query: SELECT sum(SurfaceArea) FROM country WHERE Region  =  "Caribbean"
question: How much surface area do the countires in the Carribean cover together?
query_toks: SELECT sum ( SurfaceArea ) FROM country WHERE Region = `` Caribbean ''
query_toks_no_value: select sum ( surfacearea ) from country where region = value
question_toks: How much surface area do the countires in the Carribean cover together?