State the short description for the project which got the donation at 14:44:29 on 2012/9/6.
donation at 14:44:29 on 2012/9/6 refers to donation_timestamp = '2012/9/6 14:44:29';
SELECT T1.short_description FROM essays AS T1 INNER JOIN donations AS T2 ON T1.projectid = T2.projectid WHERE T2.donation_timestamp LIKE '2012-09-06 14:44:29'