CREATE TABLE wine (no NUMBER, grape CLOB, winery CLOB, appelation CLOB, state CLOB, name CLOB, year NUMBER, price NUMBER, score NUMBER, cases NUMBER, drink CLOB)
CREATE TABLE grapes (id NUMBER, grape CLOB, color CLOB)
CREATE TABLE appellations (no NUMBER, appelation CLOB, county CLOB, state CLOB, area CLOB, isava CLOB)

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" "T1" JOIN "wine" "T2" ON "T1"."grape" = "T2"."grape" AND "T2"."score" > 90 WHERE "T1"."color" = "White"