Find the names of courses taught by the tutor who has personal name "Julio".
create table course_authors_and_tutors (author_id varchar, personal_name varchar, PRIMARY KEY (author_id)); create table courses (course_name varchar, author_id varchar, PRIMARY KEY (course_name))
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"