What is the average rating for each movie that has never been reviewed by Brittany Harris?
SELECT mID ,  avg(stars) FROM Rating WHERE mID NOT IN (SELECT T1.mID FROM Rating AS T1 JOIN Reviewer AS T2 ON T1.rID  =  T2.rID WHERE T2.name  =  "Brittany Harris") GROUP BY mID
SELECT mID ,  avg(stars) FROM Rating WHERE mID NOT IN (SELECT T1.mID FROM Rating AS T1 JOIN Reviewer AS T2 ON T1.rID  =  T2.rID WHERE T2.name  =  "Brittany Harris") GROUP BY mID
[{'mID': 101, 'avg(stars)': 3.0}, {'mID': 104, 'avg(stars)': 2.5}, {'mID': 106, 'avg(stars)': 4.5}, {'mID': 107, 'avg(stars)': 4.0}]