Context: CREATE TABLE Course_Authors_and_Tutors (author_id VARCHAR, personal_name VARCHAR); CREATE TABLE Courses (course_name VARCHAR, author_id VARCHAR)
Question: Find the names of courses taught by the tutor who has personal name "Julio".
Answer: SELECT T2.course_name FROM Course_Authors_and_Tutors AS T1 JOIN Courses AS T2 ON T1.author_id = T2.author_id WHERE T1.personal_name = "Julio"