Context: CREATE TABLE Rating (stars INTEGER, mID VARCHAR); CREATE TABLE Movie (title VARCHAR, director VARCHAR, mID VARCHAR)
Question: Find the title and score of the movie with the lowest rating among all movies directed by each director.
Answer: SELECT T2.title, T1.stars, T2.director, MIN(T1.stars) FROM Rating AS T1 JOIN Movie AS T2 ON T1.mID = T2.mID GROUP BY T2.director