Among the students that have been absent from school for more than 5 months, how many of them are male?
absent from school for more than 5 months refers to `month`  > = 5;
SELECT COUNT(T1.name) FROM longest_absense_from_school AS T1 INNER JOIN male AS T2 ON T1.`name` = T2.`name` WHERE T1.`month` >= 5