Context: CREATE TABLE GRAPES (Grape VARCHAR, Color VARCHAR); CREATE TABLE WINE (Grape VARCHAR, score VARCHAR)
Question: Find the the grape whose white color grapes are used to produce wines with scores higher than 90.
Answer: 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