Now, can you please tell me the name and id of the good with the highest average rank?
SELECT T1.title ,  T1.i_id FROM item AS T1 JOIN review AS T2 ON T1.i_id   =   T2.i_id GROUP BY T2.i_id ORDER BY avg ( T2.rank )  DESC LIMIT 1
highest average rank refers to MAX(AVG(rank)); name refers to title; id refers to i_id;