What gender of users posted the most tweets in `en`?
"en" is the language and refers to Lang = 'en'; most tweet in 'en' refers to Max(Count(text where Lang = 'en'))
SELECT T.Gender FROM ( SELECT T2.Gender, COUNT( text) AS num FROM twitter AS T1 INNER JOIN user AS T2 ON T1.UserID = T2.UserID WHERE T1.Lang = 'en' GROUP BY T2.Gender ) T ORDER BY T.num DESC LIMIT 1
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, 
