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

Find the county where produces the most number of wines with score higher than 90.
SELECT T1.county FROM appellations AS T1 JOIN wine AS T2 ON T1.appelation = T2.appelation WHERE T2.score > 90 GROUP BY T1.county ORDER BY COUNT(*) DESC LIMIT 1
SELECT "T1"."county" FROM "appellations" AS "T1" JOIN "wine" AS "T2" ON "T1"."appelation" = "T2"."appelation" AND "T2"."score" > 90 GROUP BY "T1"."county" ORDER BY COUNT(*) DESC NULLS LAST LIMIT 1