Find each target user's name and average trust score.
SELECT T1.name ,  avg(trust) FROM useracct AS T1 JOIN trust AS T2 ON T1.u_id  =  T2.target_u_id GROUP BY T2.target_u_id
SELECT T1.name ,  avg(trust) FROM useracct AS T1 JOIN trust AS T2 ON T1.u_id  =  T2.target_u_id GROUP BY T2.target_u_id
[{'name': 'Mark', 'avg(trust)': 4.666666666666667}, {'name': 'Terry', 'avg(trust)': 5.0}, {'name': 'Nancy', 'avg(trust)': 8.0}, {'name': 'Rosie', 'avg(trust)': 4.5}, {'name': 'Roxi', 'avg(trust)': 10.0}]