Among all the tweets that are reshared, how many of them are posted by a user in Buenos Aires?
reshared refers to Isreshare = 'TRUE'; 'Buenos Aires' is the City
SELECT COUNT(T1.TweetID) FROM twitter AS T1 INNER JOIN location AS T2 ON T2.LocationID = T1.LocationID WHERE T2.City = 'Buenos Aires' AND T1.IsReshare = 'TRUE'
database name:db_id social_media
location table location Cols: location id dtype integer, Country dtype text, State dtype text, state code dtype text, City dtype text, 
user table user Cols: user id dtype text, Gender dtype text, 
twitter table twitter Cols: tweet id dtype text, Weekday dtype text, Hour dtype integer, Day dtype integer, language dtype text, is reshare dtype text, Reach dtype integer, retweet count dtype integer, Likes dtype integer, Klout dtype integer, Sentiment dtype real, text dtype text, location id dtype integer, user id dtype text, 
