SELECT address_line_1 FROM Course_Authors_and_Tutors WHERE personal_name	 =  "Cathrine"
Return the addresses of the course authors or tutors whose personal name is "Cathrine".
SELECT address_line_1 FROM Course_Authors_and_Tutors WHERE personal_name = `` Cathrine ''
select address_line_1 from course_authors_and_tutors where personal_name = value
Return the addresses of the course authors or tutors whose personal name is `` Cathrine '' .