Question: What are the names of the course authors who teach the course with the name "operating system" or "data structure" please? | do you want to return their personal, middle, and family names? | All of those, please?
SQL: SELECT T1.personal_name, t1.middle_name, t1.family_name FROM Course_Authors_and_Tutors AS T1 JOIN Courses AS T2 ON T1.author_id   =   T2.author_id WHERE T2.course_name   =   "operating system" OR T2.course_name   =   "data structure"