Find the name of the target user with the lowest trust score.
SELECT T1.name FROM useracct AS T1 JOIN trust AS T2 ON T1.u_id  =  T2.target_u_id ORDER BY trust LIMIT 1
SELECT T1.name FROM useracct AS T1 JOIN trust AS T2 ON T1.u_id  =  T2.target_u_id ORDER BY trust LIMIT 1
[{'name': 'Mark'}]