What is the area of the appelation that produces the highest number of wines before the year of 2010?
SELECT T1.Area FROM APPELLATIONS AS T1 JOIN WINE AS T2 ON T1.Appelation  =  T2.Appelation GROUP BY T2.Appelation HAVING T2.year  <  2010 ORDER BY count(*) DESC LIMIT 1
SELECT T1.Area FROM APPELLATIONS AS T1 JOIN WINE AS T2 ON T1.Appelation  =  T2.Appelation GROUP BY T2.Appelation HAVING T2.year  <  2010 ORDER BY count(*) DESC LIMIT 1
[{'Area': 'North Coast'}]