SELECT DISTINCT T1.Grape FROM GRAPES AS T1 JOIN WINE AS T2 ON T1.Grape  =  T2.Grape WHERE T1.Color  =  "White" AND T2.score  >  90
Find the white grape used to produce wines with scores above 90.
SELECT DISTINCT T1.Grape FROM GRAPES AS T1 JOIN WINE AS T2 ON T1.Grape = T2.Grape WHERE T1.Color = `` White '' AND T2.score > 90
select distinct t1 . grape from grapes as t1 join wine as t2 on t1 . grape = t2 . grape where t1 . color = value and t2 . score > value
Find the white grape used to produce wines with scores above 90 .