Which course is enrolled in by the most students? Give me the course name.
SELECT T1.course_name FROM Courses AS T1 JOIN Student_Course_Enrolment AS T2 ON T1.course_id  =  T2.course_id GROUP BY T1.course_name ORDER BY COUNT(*) DESC LIMIT 1
SELECT T1.course_name FROM Courses AS T1 JOIN Student_Course_Enrolment AS T2 ON T1.course_id  =  T2.course_id GROUP BY T1.course_name ORDER BY COUNT(*) DESC LIMIT 1
[{'course_name': 'French'}]